T.R | Title | User | Personal Name | Date | Lines |
---|
1384.1 | | SA1794::TENEROWICZT | | Tue Nov 19 1991 08:27 | 34 |
|
To kick things off I had intended to build a pair of my own design
pattern ships but fell into a deal for a half build Aurora design
by Phillips Aircraft. This is a fiberglas fused copy of the japanize
Aurora design. When I traded dor the plane it had the wings and stabs
covered and the LE/TE installed. The previous owner had installed
the firewall using the usual method of going off of the spinner ring
to determine the angle of the firewall only to fing out it was molded
incorrectly and had to much down thrust.
I've been working on the plane for he past few days since test flying
the Dragon Lady. I've carved out the firewall leaving app. 1/4" glued
to the fuse. It acts like a former. Using a rubber mount I had to
move the firewall forward anyways so this worked out OK. I ended up
shimming the bottom of the snipper about 1/8" to get the down thrust to
a manageable 2 degrees.
Last night I fit the belly pan making all of the necessary cut outs to
fit the engine. I also installed oall of the pins used to keep the
pan in place. I rough fit the 1/4 turn fastener to hold the pan down
and will finish this tonight by installing a mounting block to secure
the wire that is used with the 1/4 turn fastener.
If I continue to work on a nightly basis I should have this all framed
up before the second week of december. I'm going to use a fellow
modelers paint room so I should get it finished early this winter and
the be ably to move onto possibly the Flybaby or some other light
scale project.
Tom
I really hope that people use this note tokeep in touch with other
o what they are doing on a nightly basis.
|
1384.2 | | SA1794::TENEROWICZT | | Wed Nov 20 1991 08:06 | 18 |
|
I spent most of the nights building time fixing household items...
I hadn't fix this past fall... I did get into the shop to lay out
the retract mounting blocks/pads. One interesting Item when flying
off grass with retracts it to imbed the LE of the retract pad deeper
into the wing than the TE. When the retract is extended it will angle
forward which will help the ground handling of the plane. Helps to
keep the plane from noseing over.
I also finished mounting the 1/4 turn fastener and glued the
horizontal stab halves together. This will get either paper/dope or
fiberglas before I install it. This will help the finishing process
along.
I guess from the replies... no one is working on anything?
Tom
|
1384.3 | Burning the Midnight oil in the wrong location for this note | ZENDIA::REITH | Jim Reith DTN 226-6102 - LTN2-1/F02 | Wed Nov 20 1991 08:55 | 5 |
| Having gotten out of here at 7:40pm last night, working is relative. I
managed to get my Predator charged and put a towhook in it (now that
the HLG events are over, I can get lazy). I'll get a chance to take
advantage of today's nice weather before it disappears for the winter.
Serious building will have to wait until Thanksgiving weekend.
|
1384.4 | Busy Through Christmas... | CSOA1::CTULANKO | | Wed Nov 20 1991 10:56 | 24 |
|
I still have a Great Planes Cap21 on the shelf , just about ready
to cover. the wing half's need glued together and ailerons need
"sized to the wing" and it will be ready to cover. The fuselage
needs the four corners rounded on the cowling and front, then it's
ready to cover. I guess the big hangup is trying to figure what
kind of color pattern I want to do it in, rather than the Scale
white. It will be Monokoted, probably in a base white with some
type of color scheme and then ready for engine & radio. I have
a new O.S. .46SF ABC ready and awaitin' install.
Also, given the chance, I want to continue the work on
my Top-Flite Corsair. The wing is about ready for sheeting, but
I decided to change the way the flap mechanics work, so a refit
is in the works. This should keep me busy for quite a while. And,
if, and only if I have any time left, I'll start on a .25 sized
B25 I've scratch kitted from a set of old Nick Ziroli plans. These
plans are on a floating schedule though, due to a new addition to
the family.
I guess that covers my time for the next zillion years :^)
Carl
|
1384.5 | | SA1794::TENEROWICZT | | Fri Nov 22 1991 08:34 | 11 |
|
Spent last night cutting out a retract location in one of the Auroras'
wing panels. Usually this is done before the sheeting process, but
the previous owned had planned to use fixed trike gear so no
provisions had been made. I forgot how much fun it is retrofiting
a sheeted wing for retracts. Lucky thing he didn't glue the two
wing panels together. As seperate panels it does help the job
along. I should get to the other panel tonight and then onto
cutting out and making the ailerons.
Tom
|
1384.6 | Sophisticated Lady-0 , ground/wind-1 | BBOVAX::DONAGHY | | Fri Nov 22 1991 14:24 | 15 |
| Well I guess , heres my 2 Bits ( 1/2 a nibble for you diode bitties)
I had in the past been the pro builder , afraid to fly. Built a
Sophisticated Lady and a PT20 from Greatplanes. Saturdays weather
was nice and my 3Year old son says, "Dad , can we fly the planes
today. (Dad) sure son lets go. So all was well , two flights went
fine using an .049 power pod on the S. L. .Sunday was different
, wind did the girl in . So we are almost finished the rebuild of
the nose that the vertical landing broke, working on a scratch
built 34" ,two channel Flexible Flyer (.049 , thats is claimed durable)
And if luck hold out , we are building a SS20 when we get up to speed.
In the mean time , all the notes about the "Predator" looks like the
next project.
Bob in PHO
|
1384.7 | | SA1794::TENEROWICZT | | Mon Nov 25 1991 09:40 | 21 |
| This past weekend I spent some time finishing up the installation of
the retract unit to one of the two wing panels. I epoxied the plat in
place and added 1/4" dowls to help support this area. After hardening I
went yo work filling in the plate area where the retract units ISN't.
For those that have never installed a retract, you install a plate that
is larger than the retract unit. Then you install the retract and fill
in any of the plate area that is exposed until this blends into the
wings' surface. Most times when the plates are installed before
sheeting you can simply glue in 1/4" stock to form a border anound the
retract unit. The sheeting when applied covers and remaining exposed
plate. With the installation coming after the sheeting I ended up
adding filler blocks/strips to cover the entire area. I suppose it's a
bit heavier this way but then again I had no other choise in the
matter.
I still need to sheet the inner wall of the wheel well area. Most times
this is left as foam and then simply painted but not being completely
smooth I plan to sheet the area with balsa fo finish it off.
Tom
|
1384.8 | Quite heart wrenching really. | ELMAGO::TTOMBAUGH | Janine T., come fly with me! | Mon Nov 25 1991 10:23 | 30 |
| "progress or lack thereof".
The perfect place to put the building saga of the Weston 570.
You need only jump between here and 871, to be immediately
convinced to take up cliff diving as a more rewarding hobby.
Last night I glued the stabs to the fuselage at a 100 degree
included angle as per the instuctions, one of few places where
he commits himself to hard and fast numbers.
Built a jig out of cardboard, and it came out pretty well.
The servo wires come out of the stab root and snake into the open
end of the fuselage tube, which can then be plugged with a removable
tapered piece, or so I assume, since there is no word in the
instructions about any of this.
The ply wing saddle piece has been installed inside the fuse. ditto
the nose former that the motor bolts up to. This seems pretty
secure, won't need any aft motor support.
With the stabs on I can now coat the fuselage with laminating epoxy
to provide a paint base.
In a poignant related issue, Bill W. received his Magic kit.
One look in the box and he's reeling in shock. Offered me $100
to build it for him. No way Jose. The money's not the object, but
no way will I spend that kind of time now. The experience would
be "nice", but a double dose of Weston kit building ? uh-uh.
Terry
|
1384.9 | The Nieuport-11 lives.. | N25480::FRIEDRICHS | Keep'm straight 'n level | Mon Nov 25 1991 10:35 | 17 |
| Hey, this rainy weekend I acutally dusted off the Nieuport-11 parts and
restarted the work on the wings! I have delusions that I will have it
done in time for the Nats (fat chance!)
For those that don'r remember, this is a Proctor kit.. Tough kit!! I
have lowered my expectations on the quality of the finished product to
something I believe is manageable.. Hopefully this will get me to
finish it in a reasonable time.
BTW - Does anyone have a PC with a scanner and optical character
reader software?? I want to scan in the instruction manual and try
to annotate and break out individual steps (currently it is in running
paragraph form)..
Thanks,
jeff
|
1384.10 | 1 Assembled, 1 Built, 1 working | DENVER::BEATTY | | Mon Nov 25 1991 22:50 | 19 |
| I built an ACE Biplane this summer with an O.S. .28 motor, should be
hot when I get around to flying it. I'm half way through a FLYLINE
Great Lakes for my O.S. .20 four stroke.
Since I have not flown much for nearly two years I got a Duraplane and
assembled it (not much to build) and put ski's on it. My son and I
have been out flying it from an empty field the past couple of
weekends. Lives up to its name, great fun from the snow too.
To make matters more interesting I am about to try and teach myself to
fly Mode II (throttle and rudder on the left stick/rudder and aileron
on the right) I learned mode I flying gliders from a hi start.
I'm seriously thinking about building a 1 to 1 scale Fly Baby and I
think teaching myself Mode II will serve me well in a full size. I
took a break from RC to get my pilots license, have about 300 hours
now.
Will
|
1384.11 | | SA1794::TENEROWICZT | | Tue Nov 26 1991 08:26 | 25 |
|
Will,
The flybaby has always had a special place in my heart. Good
luck with the project.
Last night I got around to working on the second retract
installation in the other wing panel. To start I had to make a
template up from the first panel to make sure I got the second retract
installed at the correct angle. This done and the location all layed
out I proceeded to remove the balsa and foam from the wheelwell,strut
location and mounting area. Once cleaned out and verified with the
template exposy secured the mounting plate to the foam. I then added
the 1/4" dowl supports and screwed the retract unit in place.
I left it there to watch the monday night football game. Should
have continued to work as the game wasn't worth watching...
Tom
|
1384.12 | More Weston 570 saga. | ELMAGO::TTOMBAUGH | Janine T., come fly with me! | Tue Nov 26 1991 11:49 | 28 |
| The right wing outbd. panel was removed from the bag last night.
Again, the paint transference is very good, but on this larger piece
slight imperfections in the inner mylar surface, foreign objects in/on
the paint, etc. are more noticeable.
The separate piece of glass cloth along the l.e. is not the final
answer to handling the mating problem of the upper and lower covering.
I'm not sure this can be completely resolved given the conditions of
no separate l.e. edge on the core, and using two pieces of mylar
in the bagging. I'll have to do the same on the left panel to avoid
an imbalance, but for the center section I'm going to inset
a 3/32" dowel in the l.e. of the core. This will give a hard surface
for the cloth to overlap and can be sanded flush and smooth after
bagging. I can live with the slight weight penalty.
On the fuselage front, the entire piece was coated with laminating
epoxy, brushed on with white tinting paste added to give a base color.
After a few days to cure this will be sanded lightly and given a few
light color coats.
One observation: Kevlar works great as an inner layer for fuselage
layups, wing skin laminate, etc.
It is *!#%$^*&, when used as an outer layer as Weston does on the
fuselage. Don't even think about sanding any seams or surface
imperfections. Simply coat the Kevlar with epoxy, paint, and let it
go at that.
Terry
|
1384.13 | Pre-mold the mylar?? | N25480::FRIEDRICHS | Keep'm straight 'n level | Tue Nov 26 1991 12:27 | 18 |
| OK, see if I have this right...
The best solution would be to have the mylar make the radius around the
leading edge, but it is too stiff, right??
Question... What does Mylar do under heat??
My thought is before you bag the fiberglass, do a vacuum molding
of the mylar to the leading edge. Let it cool. Then do your standard
layup using this piece of mylar.
The big question is, does mylar become plyable at a temperature that
won't melt the foam core?? I dunno... As an alternative, perhaps
you will need to make a copy of the leading edge out of wood to do
the form...
jeff
|
1384.14 | Leading edge ..what to do ? | ELMAGO::TTOMBAUGH | Janine T., come fly with me! | Tue Nov 26 1991 12:45 | 14 |
| Don't know what the required temperature might be, but my gut
feeling is that mylar molding temps. would be too high to safely
use the foam core as the male mold.
A wood mold might work but then there's the job of making an accurate
airfoil surface.
Using thinner mylar and higher bagging vacuum still looks like the
best chance at solving this in the fewest steps.
I may go so far as to call Weston. There may be some absurdly simple
answer. Then again, why does he mention using l.e. trim tape to hide
the whole problem ?
Terry
|
1384.15 | | SA1794::TENEROWICZT | | Tue Nov 26 1991 14:32 | 66 |
|
On the last plane I was flying (LA-1) I installed a fixed
tailwheel. This worked well but I found it limiting for the
places I fly from. So on the Aurora I'm presently building
I'll be installing a stearable tailwheel. Problem is that with
most stearable tailwheels they tend to be to critical as the initial
rollout starts. Always in search of those elusive points..
SO, I'm going to adopt a tailwheel I've seen used a few times
with great success. It's a home made unit.. Here's how.
To start a hardwood block is glued to the bottom/inside
surface of the fuse app. 1" forward of the hinge line. From the
bottom a 3/32nds hole is drilled parallel and straight to the thrust
line. One side of the fuse (adjacent to the wood block) has a hole cut
into it just large enough to accept a small wheel collar. A tailwheel
is fashioned out of 3/32nd wire. A wheel collar has a hole drilled
in it to accept a 3/32nd wire perperdicular to the through hole.
The chrome plating is sanded off adjacent to the 3/32nds hole and a
tiller wire app. 2 1/2" long is soldered into the hole. In the rudder
app. 1" behind the hinge line a plastic stem is glue. This stem
protrudes from the bottom of the rudder and has a 3/32nd" hole drilled
into it parallel to the bottom of the rudder.
ASSEMBLY.
The tiller wire soldered to the wheel collar is slid into the plastic
stem that protrudes from the rudder. The wheelcollar lines up with the
hole in the fuse/hardwood block. The tailwheel wire is now slid
through the wheel collar, throught the fuse/hardwood block so that
app. 1/4" protrudes inside the fuse. A second wheel collar is slid
over the tailwheel wire through the cut out in the fuse side. Once
secured the wheel collar attached to the tiller wire is tightened
down on the tailwheel wire.
This set-up allows for excessive amounts of rudder throw while limiting
the throw of the tailwheel. It's also maintanable and can be completely
removed and installed in a matter of seconds at the field. Really a
positive when you're at a contest and you have a problem.
|<-hinge line
|
| inside fuse
|
| __||__ wheel collar
rudder | ______|_||_|__
| | || |
---------------|--------------||--------------
| | __|___
=| |=================| 0 | wheel collar
tiller --||--
||
//
//
//
//
//
//
tailwheel
Tom
P.S. one of the items I hope to accomplish during the LONG
holiday weekend
|
1384.16 | | SA1794::TENEROWICZT | | Tue Dec 03 1991 08:35 | 20 |
| Spend some time last week working on the Aurora. I finished making
the ailerons and getting the wing glued together. Then I spend two
nights time installing hard points in the wing and drilling the fuse
for the wing hold downs. Found out that the fuse has a slight bend in
it so I had to fudge the alignment. I should get to installing the
horizontal stab this week and then it's about one more weeks work
to finish up before paint and monocote. Items still needing to be done
are;
install horizontal stab
finish installation of vertical stab.
sand fuse seam and fill with puddy
bevel rudder,elevators and ailerons
finish sand LE of wing.
install servo box for retract servo.
install radio and controls
finish
Tom
|
1384.17 | | SA1794::TENEROWICZT | | Wed Dec 04 1991 07:50 | 7 |
| Last night I got one side (the top) of the wing center section
fiberglased. I'm using the Zap "oderless" finishing resin again.
I had it so I figured I'd use it. Placement of the horizontal stab
starts tomorrow.
Tom
|
1384.18 | Weston 570 progress | ELMAGO::TTOMBAUGH | Janine T., come fly with me! | Wed Dec 04 1991 09:56 | 28 |
| The center section of the Weston 570 wing is finally bagged. The
surface quality is the best of the three wing panels, as I gradually
learned the best techniques.
I used white lacquer, spray can, on top and flourescent orange Krylon
on the bottom. The orange shows sub-surface imperfections, being
semi-translucent. One oddity is that the flourescent Krylon colors
are normally a matte, flat, finish but after being bagged it was
glossy. Apparently the epoxy seeps into it or somehow interacts to
create the glossy surface.
Auto paste wax works better than liquid wax as a mylar release. Buffing
the mylar surface VERY well is the key to a high quality surface, more
so it would seem, than the quality of the paint job itself. After all,
I painted the mylar outside on my carport, with all its attendent
foreign objects blowing around.
The leading edge problem was addressed on the center panel by trimming
the core to a flat l.e. before bagging. This gave a flat smooth
surface to trim back the excess cloth to, and a 3/8" X 3/16 strip
of balsa will be glued on and shaped to a true airfoil l.e.
Then the whole l.e. will be covered with a strip of chrome trim, making
it unnecessary to finish the surface of the balsa.
I'll probably go back and trim off the l.e. of the outbd. panels and
use the same trick, as I'm not happy with the way the l.e. comes out
when using only the core to define it, a la Weston's suggestion.
Terry
|
1384.19 | | SA1794::TENEROWICZT | | Thu Dec 05 1991 08:09 | 15 |
|
Spent about two hours on getting the stab tack glued into the fuse.
I ended up needing to trim the cut outs the previous owner had cut.
They were oriented corrctly on the marks molded into the fuse but these
were off by about 1/16". If I had to buy one of these kits from
Phillips Aircraft ( they are presently out of business) I'd pass.
I've had to make more that a few concessions during the building.
Case in point is the fuse is straight from the TE to the spinner ring.
From the TE to the rudder post it's bend off about 1/8". Luckly thing
is my manuaver schedule has not knife edge flight so this trim issue
shouldn't matter.
Tom
|
1384.20 | | SA1794::TENEROWICZT | | Mon Dec 09 1991 08:39 | 21 |
|
Over the weekend I finished installing the horizontal stab on the
Aurora. This was done using Sig Epoxylite. It's kind of an
epoxy, kind of a puddy, kind of a filler material. Two part
mix tha hardens in a few hours. A real bitch to sand if you
use the wrong technique. The best method I've found is to glop
on the shuff and the use a stick to work it into a rough idea of
what you want. Then with a small cup of water and a handful
of paper towls you attack the fillet your trying to make with
your finger. Wet the finger and use it to work the puddy, taking
up the excess as you go along. It works well and a finish
which doesn't need sanding can be easily attained.
This done the vertical got a does of filler to flare the sheeted foam
stab into the fiberglas fuse.
The plane should be ready for covering by the end of the week.
Tom
|
1384.21 | | SA1794::TENEROWICZT | | Wed Dec 11 1991 08:29 | 20 |
| Thes last few nights I've spent in bed (after work) with a
duzzy od a head cold. But last night I forced myself to
do a little on the Aurora. The top center section is not
fiberglased. I used that Zap "odorless" finishing resin
again. When mixing it, it reminds me of "Safety-Poxy" in
color and odor. When you're close to it, it does have an
odor. If one was expecting nothing, like smelling water,
then you would be disappointed. This I should trim tonight,
then onto the bottom. A final sanding and the installation of
a servo box fro the retract sevro and the wing is complete.
The vertical stab got a bit more filler and will get a good
sanding later in the week. The only outstanding items will be
the installation of exit tubes for the push/pull controls for
the rudder and elevator, a small hole for adjusting the pump
on the engine and beveling the control surfaces. Then on to
covering and paint. I'm planning on Dark metalic blue and yellow
with some other accent color.
Tom
|
1384.22 | | SA1794::TENEROWICZT | | Fri Dec 13 1991 08:10 | 21 |
|
I was out with the flu yesterday so didn't get much accomplished.
Late last night I trimmed the top center section fiberglas and
installed the bottom center section fiberglas. I'm using a different
system (to me) for hard points in the wing. In the past I've used
the 1/4" fiberglas pushrod material and passed the wing bolt through
it. This time I've installed 3/4" dowls with 1/4" holes drilled
in them. On the top of the wing where the wing meets the fuse I
sanded the dowls smooth with the wing. This assures they won't
hinder the wing to fuse fit. It made fiberglassing easy. On the
bottom I left the hard points sticking out and at right angles so that
the bolt heads have a flat surface to snug up against. This made the
bottom fiberglas a little interesting until I figured out how to
determine where the holes in the fiberglas needed to be. I ended up
taping the fiberglas over the wing and using a pencil to rub the edge
of the dowl. This transfered where the glas needed to be cut and
it worked great.
|
1384.23 | Finally a weekend in the shop... | ZENDIA::REITH | Jim Reith DTN 226-6102 - LTN2-1/F02 | Mon Dec 16 1991 09:23 | 24 |
| I finally got a large chunk of time in the shop. One thing that I've
always told people is to never throw any crash away on the day it
happens. It always looks worse than it really is (except my half
Gremlin stuck in the Merrimac tree 8^). Saturday I decided to pass
judgement on my Panic which cartwheeled due to a novice walking onto
the runway as I was coming downwind deadstick. I've been intending to
build another Panic and have even got another set of cores but I
haven't made any progress in months (gliders and Gremlins got in the
way) Saturday I found that the fuselage was only in two pieces and one
wing panel was cracked (but all four tips were pulled off due to the
wings twisting) I managed to get the fuselage back together with 30
minute epoxy and then decided to fiberglass it to hold it together
(it's broken there several times which is why I became frustrated) I
used a single layer of 6oz cloth and painted it yesterday and it looks
almost as good as new. I also modified the tank to try the submerged
pressure line and I hope to fly it next week.
I flew my Rude B*tch last thursday and I wasn't very happy with the
performance. I took the incedence meter to it yesterday and found 2
degrees of negative incidence near the tips of the center section. This
was probably introduced when I put the washout in the tip panels. I
never would have noticed it without the meter and couldn't see it even
though the meter told me it was there. Maybe tomorrow will show some
improvement in the flying characteristics.
|
1384.24 | Dragon Lady skiis | SA1794::TENEROWICZT | | Mon Dec 30 1991 08:16 | 18 |
|
Spent a good few hours friday fabricating the parts for a pair
of skiis for my Dragon Lady. The bottoms were boiled and then placed
into the forms to form the curved buckets of the skiis. Friday night
I assembled the center keel onto the bottom and added the landing gear
reenforcements. Sat I installed the skiis onto the fiberglas gear and
installed the shock mounting system. A little spray of clear
urethane(sp) and a coat of wax and they were ready. They are now
installed on the Dragon Lady fuse awaiting some snow fall.
Woke this morning to snow. Possible 1-3 inches. That should be
enough to take an early day tomorrow and try them out.
Tom
|
1384.25 | Omega prep starts. | ELMAGO::TTOMBAUGH | Dangerously close to mawkishness | Mon Dec 30 1991 10:05 | 16 |
| I finally got around to doing the first work on the Omega.
Cut out the four hatch panels for the wing servoes. Square indentations
are molded into the bottom skins during layup. The cutouts are made
keeping a small lip around the edges to support the black anodized
aluminum hatch plates.
A 3 X 3" piece of CF cloth was epoxied to the inside surface of the
top wing skin where the servoes will mount. Spruce blocks with
blind nuts are then epoxied at each end of the servo and 6-32
machine screws secure the servo through the side-mount ears of the
94141s.
There's 40-50 hours of work to get these things ready to fly, although
they seem complete out of the box, to the casual observer.
Terry
|
1384.26 | 7lb 10oz, 19.5" - that pretty heavy wingloading 8^) | ZENDIA::REITH | Jim Reith DTN 226-6102 - LTN2-1/F02 | Mon Dec 30 1991 10:44 | 24 |
| I know someone who hasn't spent EVERY night in the shop...
Date: Sat, 28 Dec 91 14:40:42 -0500
From: zendia::apache::friedrichs (We get our Deduction! 28-Dec-1991
1432)
Subject: Victoria Lynn Friedrichs
Hi!!
I am proud to announce that Vicky was born (quite unexpectadly) at
5:56am, 28-Dec-1991 (she was scheduled for 2-Jan).
She weighed in at 7lb 10oz, 19.5".
Mom and daughter are doing great, although we are all a bit tired from
a pretty sleepless night. They should be home on about the 1st!
Finally!! A project completed ahead of schedule (without any
functionality removed!).
Cheers,
jeff
|
1384.27 | One of each. Nice going | SNAX::SMITH | I FEEL THE NEED | Mon Dec 30 1991 12:11 | 3 |
| Congrats Jeff. Can't wait for the maiden flight......
Steve
|
1384.28 | | SA1794::TENEROWICZT | | Mon Dec 30 1991 12:49 | 5 |
| Congradulations Jeff and Mrs's Jeff.. I guess Jeff was burning the
Midnight oil about nine months ago. In a manor of speaking:-)
Tom
|
1384.29 | It's all about flow rates..in and out. | ELMAGO::TTOMBAUGH | Dangerously close to mawkishness | Mon Dec 30 1991 13:11 | 11 |
| Arbitrarily assigning a chord dimension of 8", we arrive at a wing
loading of 112.96 oz/sq. ft.
That's one speedy little slope ship that Jeff has there !
But congrats anyway, and if this is your first you have yet to work
out the method for delivering the max amount of formula in the minimum
amount of time. Very useful knowledge at 2 A.M.
My daughter survived my experimentation, and after 20 years harbors
only slight resentment. ;^).
Terry
|
1384.30 | | APACHE::FRIEDRICHS | Keep'm straight 'n level | Mon Dec 30 1991 13:38 | 5 |
| Thanks for the congrats!!! We'll have her out at the field in no time!
cheers,
jeff
|
1384.31 | four 2 day weeks in a row... | ZENDIA::REITH | Jim Reith DTN 226-6102 - LTN2-1/F02 | Thu Jan 02 1992 09:10 | 13 |
| Wow. A day in the workshop in the middle of the week!
I'm finishing up partial projects while waiting for my Alcyone to come
in. I managed to run a tank through my Panic to get it all sorted out
and I also worked on a 1/2A Ace GLH II that was mostly finished. I got
the wing glued in and the decking and hatches done and just need to
install the radio and cover to be finished. I like this size plane
because it gives me something to fly at small sites without a lot of
support equipment. Last new thing sitting around is a .20 sized Sig
Aero Bipe that I won at a funfly 10 years ago. I've got one of the
wings covered and just need to finish the linkage and close up the
fuselage bottom to have this one done also. I should have plenty to fly
in the coming year.
|
1384.32 | Sure beats my records for longest build time! | STARGL::CAVANAGH | Jim Cavanagh SHR1-3/R20 Dtn:237-2252 | Thu Jan 02 1992 11:10 | 10 |
| > Last new thing sitting around is a .20 sized Sig
> Aero Bipe that I won at a funfly 10 years ago.
> ^^^^^^^^^^^^^
And they give *ME* a bad time about slow building!!! 8^)
Jim
|
1384.33 | My CB99 was 15 years from when I got the plans | ZENDIA::REITH | Jim Reith DTN 226-6102 - LTN2-1/F02 | Thu Jan 02 1992 11:22 | 3 |
| Yeah but...
It wasn't my ONLY project for that length of time 8^)
|
1384.34 | 6+ hours in on the Omega | ELMAGO::TTOMBAUGH | Dangerously close to mawkishness | Fri Jan 03 1992 13:06 | 28 |
| After 6+ hours of fiddling, the servo mount blocks and blind nuts are
finally installed in the Omega wings. Had to switch to 4-40 nuts
for space reasons. The servos have been trial fitted including
the output arms. A cut down "+" style arm fits entirely within the
wing with the pushrod running out through the t.e. spar.
The rudder and elev. pushrod housings, dual mini-nyrods, a very small
one running inside a larger one, are installed by Fisher and he
includes the metric equivalent of the .032" steel pushrods that runs
inside the small nyrod. Unfortunately, these are only one meter
long and must be spliced with an extra ~8" of wire to be long
enough to use. The splice is done with a small brass tube with the wire
soldered in each end. The brass tube is the same o.d. as the small
nyrod and runs inside the outer nyrod nicely.
Thank goodness Phil and Tom have been through all this before, so
I knew what bits and pieces to buy without having to reinvent a
splicing system.
Next I need to wire up the servo harness for the wing servos and
find some male/female connectors for the wing/fuse interface.
The old square pin Molex connectors work well for this, but since
Teletypes are fading away, these connectors are becoming surprisingly
rare. Smaller gold plated types will work ok, although the pins
are a little more delicate.
Terry
|
1384.35 | Another project out of the queue | ZENDIA::REITH | Jim Reith DTN 226-6102 - LTN2-1/F02 | Mon Jan 06 1992 08:37 | 12 |
| Nice slow weekend. Unfortunately, I didn't get much done on planes but
I did get my "in the car" charger built. I started yesterday morning (I
had bought all the parts a few weeks back) and didn't finish until
about 6:30 last night.
I now have a 6 channel charger that will run off 12 volts. Each channel
has two settings. They all have a 12.5ma trickle setting, the other
settings are two 56ma, two 114ma, one 250ma and one 500ma channel. All
the jacks can be set up for either Tx or Rx connectors and the power
input can be from either the cigarette lighter or my starter battery.
This gives me enough field flexibility that I can stay all day and come
home when I'm tired, not out of battery.
|
1384.36 | More plodding on the Omega | ELMAGO::TTOMBAUGH | Dangerously close to mawkishness | Mon Jan 13 1992 10:17 | 15 |
| Got some nice 4 pin mini-Molex style plugs from Soaring Specialties
so went ahead and wired up the harness for the wing servos, installed
it in the wings and epoxyed the plugs in the wing roots. A prelim.
radio check shows everything working okay but the servo arms need to be
repositioned closer to neutral before programming.
Next, the ail. and flap horns will be made from three laminated pieces
of 1/16" circuit bd. material, with a tab on the center piece to drill
out to receive the pushrod.
The horns are long skinny triangles which are epoxied in the hollow
flaps and ailerons, with the tab protruding from the l.e., which
fits inside the hollow t.e. of the wing.
Terry
|
1384.37 | Since you brought it up... | ZENDIA::REITH | Jim Reith DTN 226-6102 - LTN2-1/F02 | Mon Jan 13 1992 10:33 | 18 |
| Terry,
This is a problem that I've been wrestling with the last few days. Wing
servo harnesses. I've been looking at the 1 meter aileron extensions
that Futaba has and using "external charging recepticals" to hold the
end in the fuselage side of the wing root with the cable trailing off
into the core. Your message makes me ask:
Do people use these standard extensions for their wing servos?
What do you do with the extra length (especially at the servo end) so
that the servo can be swapped out it damaged?
Is every installation custom?
I'll need to make these decisions for the Alcyone wings and would like
to figure it out before being committed to one method or another. These
will be my first embedded servo wings.
|
1384.38 | Warm up the 'ol soldering iron ! | ELMAGO::TTOMBAUGH | Dangerously close to mawkishness | Mon Jan 13 1992 11:59 | 48 |
| Yes, each installation is custom, but there are standard things to do.
It's simplest if you retain the stock wiring and plug on the servo.
Therefore you need the outbd. end of the extension wiring to end
at the servo cavity so that the plug is accessible for servo removal.
The extra wire length on the servo side can be coiled up and stuffed
in any handy spot, such as a small extension of the cavity.
If the extension wiring can be slid back and forth inside the core (not
likely if you have cut the preferred minimum size channels) then the
wire from the servo can be extended in the wing toward the root,
leaving enough slack to allow pulling the plug back out to the cavity.
On the Omega I made up a ~16" harness from 22 gauge wire and attached
a ~18" piece of Airtronics ext. cable to the far end with an Airtronics
female plug. The female plug is PFM'ed to the underside of the
lip of the aileron servo hatch (hollow wing).
Another 18" Airtronics ext. runs from the flap hatch to the wing root.
The distance is short enough to not require an additional 22 gauge ext.
At the wing root use a connector with long enough and strong enough
pins to withstand the sort of use they'll be getting. IMHO, charging
jack plugs don't meet the requirements, which is why I used the longer
molex style pins. A 4 pin plug is ok because you'll be doubling
up the power and gnd. pins to each servo and the two remaining pins
are for the separate control signal to each servo.
Use ferrite beads about half way out on the harness within the wings
and more beads on the wire inside the fuselage, just as it comes off
the plug. BTW, the female plug should be in the fuselage. The male pins
will extend out from the root ~1/2"- 3/4" if you are using the
mini-molex style. This means that there will always be contact no
matter how much root joint flex there is.
The harness inside the fuselage can be stock extensions. One
handy thing about the Airtronics extensions is the the 24" size
is cut 14"/10", the short male end running inside to the rcvr. and the
longer piece running out in the wing. No extra connectors need be
bought but a set of four 24" extensions still run you $28 !
Any way you go, there is a fair amount of soldering and shrink tube
work.
Hit me with more questions as needed.
Terry
|
1384.39 | More details | ELMAGO::TTOMBAUGH | Dangerously close to mawkishness | Mon Jan 13 1992 12:14 | 19 |
| A few additonal considerations:
The ferrite beads should be placed around the 22 gauge wire, or
whatever wire you're using for extensions, rather than around
the stock radio mfg. wiring. This avoids breaking into the mfg. wiring.
There should be at least one bead around the signal wire and one around
the power wire.
This technique has resulted in a rock solid operation and jitter free
servos in the Legend, whereas the Algebra without ferrite beads is
prone to aileron servo jitter until the plane gets a few feet away
from the xmtr. on launch.
Try to find some beads with holes through them that will simply slip
over the wire, not the in-line ACE type that require breaking and
resoldering the wire.
Terry
|
1384.40 | Source for beads? (I didn't know to ask at the hobby shop) | ZENDIA::REITH | Jim Reith DTN 226-6102 - LTN2-1/F02 | Mon Jan 13 1992 13:38 | 13 |
| Maybe this should be moved somewhere else but I'll continue here and
let a moderator decide.
Ok, I think I'm convinced about the connectors and, in asking at the
hobby shop, I was told about the same thing. I've got 1 meter Futaba
extensions and Dean's connectors. The 1 meter length should give me
enough left over to split it with the Dean's connectors and go from
servo to Rx without a splice.
I understand the purpose of the ferrite beads but where can I get them?
If I go with the manufacturer's wire from end to end, how do I do the
in wing beads? I'd rather avoid the in wing splice to avoid solder
joint vibration fatigue/failure.
|
1384.41 | Occasionally rise from the depths of my junk box. | ELMAGO::TTOMBAUGH | Dangerously close to mawkishness | Mon Jan 13 1992 13:53 | 11 |
| If you go with the mfgs. wire end to end, then you'll have to peel
apart the wires for 1"-2", just behind the plugs and slip ,the
ferrite beads on. Do it at both ends.
An electronic supply house should have beads, and sometimes a LARGE
Radio Shack, but usually not.
These are commonly used on video out connectors on BNC jacks, on
workstation mother boards, and the like.
Terry
|
1384.42 | Great Planes Decathalon 40 started. | STOHUB::JETRGR::EATON | Dan Eaton St.Louis,MO,USA, 445-6522 | Thu Feb 13 1992 14:49 | 18 |
| I started working on one of my Christmas presents the other night. My mom had
given me a Great Planes Decathalon 40 for Christmas. I was going to hold off
from starting it until I had a little more free time but then I started
thinking. My mom's in her seventies and probably will live to a hundred but
there are no guarantees she will. It would mean a lot to me to have her see
me fly the plane so I decided to do without a little more sleep for a while
and started in on construction.
The kit itself is pretty nice. I got the Dynaflight Mustang kit at the same
time and there's no comparision. The plans come rolled on two big sheets.
Looking thru the construction manual, I've noticed a lot of care put into
helping you avoid little gotcha's while building. The wood in the kit is pretty
good although a couple of pieces feel awfully heavy.
I started on the rudder the other night and have it together. Tonight I'll do
the fin and hopefully the horizontal stab Friday night. That leaves the
weekend for doing the sanding and starting on the wing.
|
1384.43 | | SA1794::TENEROWICZT | | Wed Mar 18 1992 07:31 | 17 |
|
Last couple of nights I've been puttering, putting a radio and engine
into the Phaeton II bipe I bought at the auction. At present the radio
installation is complete minus a throttle pushrod. I have the engine
(ASP61) out of another project and will install it tonight before my
club meeting or after (if I have the time). I needed a muffler as this
engine was originally in a crash that sheared off the stock bolt on
muffler and chipped the exhaust port casting. I opted for a Davis
Diesel muffler and it should be delivered by UPS today. I the temps
are in the forty's and the snow they're predicting doesn't happen,
hopefully it will fly sunday. Once it's in the air it will allow me to
remove the engine from the Dragon Lady and fit it to the Flybaby. This
done I can do the front deck work I need to get done and then return
the engine to the Lady.
Tom
|
1384.44 | | HEFTY::TENEROWICZT | | Tue Mar 24 1992 09:45 | 41 |
|
Of late I've been building a Seamaster 40 hoping to make the
Brimfield meet. This was started last year this time when I
was out with the flu. I ressorected the project from the attic
and in the last week have been puttering getting it ready.
To dat I have the fuse 90% complete only needing only to finish
the area where the wing dowls fit into the fuse. This waits
for the completion of the wing. the wing is about 75% complete.
One wing panel is finished with the other needing center section
sheeting and then I'll join the two panels and fiberglas the center
section. Once this is done I can mount the wing and finish the fuse.
I opted to build a new vertical and horizontal stab. The kitted
material was 1/4" sheet for the vertical and 3/8" sheet for the
horizontal. The material was about as hard as you can get. Terrible
for any purpose let alone stabs. I ended up making these built up
from 1/8 x 1/2" sticks with skins of 1/8" sheet stock. This done I
installed 1/2 tri stock to the base and mounted this to the fuse rear
deck. This was then carved and sanded and some filler added to
smoothly flair the vertical stab into the fuse.
My next concern is finish. The bottom of the boat/fuse will be
fiberglased but the sides and top have lightening hole cut into the
ply. These need to be covered but I'm wondering about water tightness.
I was thinking of;
Covering the top and sides with iron on fabric and then
fiberglasing the bottom and painting he entire fuse.
Or
Covering the fuse with iron on and then glassing the entire fuse
over the covering.
What do you guys think would be water tight?
Tom
|
1384.45 | | SA1794::TENEROWICZT | | Fri Mar 27 1992 08:11 | 24 |
| Last night I got back into the shop after a slight stall and finished
up the second wing panel for the Seamaster 40. It was a pain in the
*ss sheeting the center section. The wing si designed with a series of
Turbulator spars and sheeting only at the center section. This ends up
meaning that you sheet between the spars. A real pain measuring,
cutting, fitting and installing. After this and sanding the sheeting
smooth I reworked the plywood wing tip ( curious how light ply always
seems to bow after being diecut). I then installed the filler blocks
at the LE & TE and carved and sanded these into shape. The last duty of
the night was epoxying the two panel together.
I should get the wing installed on the fuse and the fuse finished up
this weekend. Brimfield is 9 weeks away. My club building contest
is 8 weeks away. I hope to paint the ship is white,black and orange.
Copying the pictures on the box. if time permits I plan to draw some
panel lines and hatch details then add a few light coats of clear.
For finishing, (after talking to a few modelers who fly off water)
I'm going to iron on some fabric covering over the lightening holes
and then glass the entire fuse with .6 oz cloth. The wing, rudder,
elevator and ailerons will get fabric. To lighten up the tail I'm
going to drill some 1" holes in the rudder and possibly the elevator.
Tom
|
1384.46 | | SA1794::TENEROWICZT | | Tue Mar 31 1992 09:10 | 13 |
|
Last night I installed two hardpoints adjacent to the elevator hinge
line. the design of the "T" tail on the seamaster has some inherent
flexing. So I plan to install two stabalizing ridsfrom these
hardpoints to the fuse. They are angled forward to minimize the
flexing in the "T" tail. Presently I have one installed and need
another piece of wire to the second strut.
I also ordered a new Royal 46 LS engine. It's an ABC long stroke.
Anyone have any scoop on this engine? I looked one over and it seemed
to have goog quality. We'll see.
Tom
|
1384.47 | | SA1794::TENEROWICZT | | Tue Mar 31 1992 10:36 | 10 |
| I also ordered a 25' roll of the new 21st century fabric covering.
This will be used as the base for the Flybaby and the Seamaster.
The seamaster fuse will get a coat of balsarite and then covering on
the stabs, top and sides of the fuse. The bottom will then be glassed.
I then plan to float the fuse in water to determine where the water
line will most likely be and then mask off this area and give the
fabric a coating or two of epoxy to fill the weave. Then the entire
plane will get painted.
Tom
|
1384.48 | | SA1794::TENEROWICZT | | Wed Apr 01 1992 09:05 | 22 |
|
Last night I was able to fiberglas the center section and then proceed
with mounting the wing to the fuse. This went slick and I should be
able to install the fuse blocks adjacent to where the wing dowls stick
into the fuse to finish off the cabin area. I didn't get to the hobby
shop yesterday to pick up the two 2/56 wires I need to the horizontal
struts but will definately be in the area tonight. I'll stop then.
My shipment of the Royal engine and the 25' roll of the 21st century
covering should be delivered UPS today. I'll give a report on how the
fabric covering works in a later note. I choose white covering and
even though this material is prepainted, I'll be priming and painting
the fuse white. i plan on priming the fuse and then using automotive
spot puddy to blend in the seams of the covering. In particular, the
seams at the joint of the vertical stab and the fuse.
Has anyone ever used ink to create the idea of panel lines? I was
thinking of doing this to add "something" to the plane. I've seen the
results on a couple of planes and it kind of looks neat. Comments?
Tom
|
1384.49 | | SA1794::TENEROWICZT | | Thu Apr 02 1992 09:14 | 16 |
|
Last night I installed the balsa top cabin blocks adjacent to the
former that holds the wing dowls. This done they were carved to
shape and sanded smooth. I missed the UPS driver so I should have my
new Royal 46 tonight (Left check). They didn't ship me my covering.
RATSSSSSSSSSSSSSSSSSSSSSSSSSS, I hate it when you order something
and specifically ask if they have it and then they short ship you your
order minus some item(s). Have to rethink the strategy and look for
another source of the covering. I want the 25' roll because my needs
for the Flybaby. With the std 6' rolls I'd have to much waist.
Anyways... I then installed the engine pylon and fitted the glas
rear pod and cowl. I need to pick up a 12 oz fuel tank for the 46.
Tom
|
1384.50 | | SA1794::TENEROWICZT | | Mon Apr 06 1992 08:58 | 16 |
| Last night I installed my new Royal 46 onto the Seamaster's engine
pylon and fit the cowl and tank pod. The pod still needs quite a
bit of work in that it was two pieces that didn't fit together
all that well. The center seam needs bondo and some heavy sanding.
The fuse is complete and now ready for finist.
Has anyone ever used .06 OZ cloth over a small section of monocote?
I may use Koverall doped to the fuse with a fiberglas covering on the
bottom and partially up the fuse side. Trying to tie down how to
finish the fuse and deal with the lightening holes from the kit fuse
sides.
I should start covering the wing,ailerons,elevator and rudder this
week.
Tom
|
1384.51 | | SA1794::TENEROWICZT | | Wed Apr 08 1992 14:11 | 11 |
|
Last night was a busy night. Not in the shop as my covering order has
yet to arrive but rather on the phone. I must have talked to 12
different calledrs if I talked to one. All in the name of setting up
two meetings his friday and saturday to discuss the up coming NAT's
at Westover. Thankfully, everythings set for the two meetinga and my
covering order should be delivered today. I hope to start the covering
of the Seamaster tonight. Must remember to paint the fuse with
Balsarite tonight when I get home from work.
Tom
|
1384.52 | | HEFTY::TENEROWICZT | | Wed Apr 08 1992 16:18 | 21 |
|
I talked to Mr Casey this afternoon and he's doing well. I couldn't
pull myself to razzing Al about flying an ARF. It will ahve to wait.
I called asking him about his Yellow Pearl. Remember his Junkmeister?
One of the calls last night ended up as a deal for a new Pica
Junkmeister kit. One of the flyers in my club works at a local
shop and a new comer to RC came in with the Pica kit asking if he could
return it for something more appropriate. He'd redieved the kit as a
present and wanted a trainer instead. Anyways I ended up getting the
kit for store cost 102.95, the newcomer got a royal Trainer and a new
OS 40fp and the store owner got a satisfied customer. Looking back on the
deal everyone got a good deal and what they wanted.
So I have another one for the building board. Should be able to get
the seamaster covered this week and proceed with the finish. That will
clear up the buolding board for the Bipe.
Tom
|
1384.53 | | SA1794::TENEROWICZT | | Mon Apr 13 1992 08:56 | 13 |
|
Over the weekend I started covering the Seamaster with the 21st Century
fabric I'd ordered. I then spent yesterday removing the covering.
I'm very disappionted with the qualities of the fabric. It seems to
not want to sitch to itself. Edges will curl up rather than stick down
and once stick you cannot unstick it and expect it to restick in a
different position.
I'm going to which to a plastic film and hole I get no leaks.
Tom
|
1384.54 | It's a bad roll!!! | FDCV25::P01YATES | | Tue Apr 14 1992 14:18 | 11 |
| Tom, sounds like you got a bad pack of 21st Century covering. I'm
using this covering (in white) and it's the best thing since S__. Did
you check the temp, it really goes on with very low heat and using the
blow gun, it tightens up great.
Send it back and get another roll, I'm sure you will like it once you
get a good roll.
Regards,
Ollie
|
1384.55 | ? | LEDS::WATT | | Tue Apr 14 1992 16:57 | 5 |
| I haven't used it, but I've heard nothing but good about 21st Century
covering.
Charlie
|
1384.56 | One done, One to go. | CSOA1::CTULANKO | | Tue Sep 14 1993 17:52 | 37 |
| It's been a long time since any entries have been entered in this
topic, so i guess I'll ablige. The Cap21 from reply .4 was finally
finished this winter in a red, white and platinum color scheme and it
turned out pretty nice. I added a stake to the front of the fin in
hopes of adding a little stability to the planes low speed snap-stall
characteristics, so it's not quite scale. The cowling was put off
until this June, when I finished procrastinating and got down to
glassing and painting. The Cap is now entirely complete(whew! it feels
good to say that) and will probably fly in the next month or so, that
is if I ever get time to visit the field. They closed the flying field
down the road and replaced it with a soccer field. Darn! Now I have
to drive @ 45min to get to the next closest field.
On the lighter side, I finally got started on the Corsair again.
The wing still needs flaps and sheeted and fitted and doors made for
the retracts and, and, ... , so I left it on the rack to help rid
myself of the getting nowhere blues. Instead, I started on the
fuselage about a month ago, and since then have framed up the bottom
half, sheeted the bottom half, framed the top formers and runners in,
built the cockpit, installed a retractable tailwheel, molded fiberglass
doors for the tailwheel and cut the opening and installed the air
cylinder and linkage. Also, I beefed-up the firewall and figured out
how to steer the thing using kevlar thread. This last week, I built
the stab, elevator, fin, and finished the rudder last night. The plate
I built that the tailwheel assy mounts to has not been glued in yet
since I need to drill holes for the elevator and rudder control rods.
There are formers in front and behind the plate, so had to leave it
loose. I had to string my steering, but needed to drill holes in the
plate first, which meant I had to build the fins to line up the control
rods to drill the holes to glue the plate to the former and...
Well, it's back to work, but I will try to keep the file up to date
on my progress. The wife works tonight, so it's off to the workshop to
BURN THE MIDNIGHT OIL!!!
Carl
|
1384.57 | Corsair tailwheel update | CSOA1::CTULANKO | | Fri Sep 17 1993 10:53 | 52 |
| Well, last night I had a chance to work in the shop again and wound up
working on the tail section. The holes for the sullivan rods were
drilled in the tailwheel plate and cut to length. Then, I removed the
tailwheel assy and worked on the doors. Took the fiberglass door form
I made and split it in half, making a door for each side. After that I
framed the opening in the fuse with 1/16" by 1/8" basswood sticks,
hoping this would give a nice surface for drilling hinge holes. It
also helps keep the door opening nice and stiff, as the balsa had a
tendenancy to curl/ding when working in this area. I don't think the
added weight will make much difference since very little wood was used.
After the door opening was done and sanded flush, I cut four 1/4"
thick by 3/8" square blocks out of balsa to glue in the fuse, which
would give the 1/2A Robart hinges something to bite into. Then,
in order to prevent binding of the doors as they open, I cut 1/8" wide
slots in the fuselage where the hinges would be located and made them
about a quarter inch deep. This ofsets the hinge pivot point and
prevents binding of the doors when they open. The hinge holes were
drilled in the blocks made earlier and the hinges were pushed flush
into the 1/8" wide slots. I allowed for the thickness of the doors,
as far as how deep into the fuse the hinge holes were drilled. The
hinges were installed in the holes and I tack glued the doors on for
final fitting. some adjustment had to be made for a slight binding
problem, so I sanded a bevel on the outside edge of each door inward,
which now allows them to easily clear the basswood frame.
After final fitting was complete, I glued the tailwheel plate in
for good and ran the outer shells for the control rods and kevlar
thread. The doors work pretty well and really look good when the
tailwheel assy is in the "down" position. This is my first attempt at
building a "as close to scale airplane", so mistakes/problems I'm sure
will continue to arise. The notes file, however has been a great help
in the building process. I've taken approximate dimensions for door
openings, etc... from books, but they are not exact, thus the necessity
for the semi-scale statement.
Wrapping up the night, I glued the rod sleeves in and re-connected
the air piston for the tailwheel. I also glued in door stops so they
would close flush without overtravel. Tonight I want to install the
servos for rudder and elevator control, support the nyrods down the
fuse, and string the kevlar thread for steering. I don't know if I
should finish/glass the portion of the fuse where the doors are;
if I did, I could glue the hinges in and work on the "closing system"
While the turtle was not sheeted. This would sure make working alot
easier. My only fear would be hanger rash after the finishing glass
was applied. Any ideas or tips out there on the closing system and
glassing idea from the notesfile "Scale" buffs would be greatly
appreciated.
Well, thats it for now and we're really looking forward to getting
back to it tonight.
Carl
|
1384.58 | Weekend update | CSOA1::CTULANKO | | Mon Sep 20 1993 12:08 | 37 |
| Well, it was another busy weekend in the workshop. I wound up
stringing the thread for the tailwheel steering and supported the
nyrods for the elevator and rudder. I then built balsa supports for
the nyrods and glued the rod shells to them permanently. Next, the
servos for the elevator and rudder were installed, the control rods
were run and connectors were installed for the tail section. Also,
clevises were used to connect the rods to the elevator servo and the
steering/rudder "wing".
Next item on the agenda was the air system. I used scrap pieces of
red nyrod for the tailwheel air piston. Two rods were run from the
piston to the opening in the fuse for the wing. Then, i ran the air
hose through the rods, connected them to the piston, and put quick
disconnects and restrictors at the other end near the wing opening.
Now it was time to pull the infamous "wing" from the storage rack and
work on the air system. I installed restrictors on the main gear
lines and put "T" connectors in the lines so the other end of the quick
disconnects for the tailwheel could be run from the actuator. Then I
installed another quick disconnect for the air tank and hooked up the
entire assembly. The system was charged and tested for leaks which,
for now, seem non-existent. Now it was time for fine tuning of the
system. Restrictors were adjusted for up and down travel on all three
set of landing gear.
With this done, it was time to glue the firewall on. The original
plans used heavy hardwood spars for firewall support/engine mounts. I
didn't like this arangement, so I cut shortened the hardwood blocks so
that they came flush with the front of the firewall and had about a
1/8" overhang on the next plywood former. This will allow me to
install and position the engine mount of my choosing and still utilize
the strenth of the hardwood blocks for firewall support.
Thats was about it for now. Tonight I hope to connect the rudder
servo to the "Wing" assy, fit a fuel tank and sheet the front of the
fuselage, top and bottom. I may even get a chance to install the
throttle servo and work on the tail section mechanics. Well, it's off
to the ol' grind for now.
Carl
|
1384.59 | Tank built | CSOA1::CTULANKO | | Tue Sep 21 1993 10:25 | 28 |
| Last night was a pretty busy night at home, doing all those honey-do's
on the list. However I did get a little work done. I put together a
12 oz. Sullivan fuel tank and did a pressure test on it. Now comes the
fun part. Guess what won't fit in the fuselage unless some of the
top section of the second former is carved away? Well, we'll have to
work on the fuel cell installation tonight and fit it in the fuse. I
also adjusted the wire tension springs for the tailwheel. With a
pull-pull steering system, I'm not sure if it was really necessary, but
it was there and needed tension added.
Tonight, I will try to find the assembly manual that came with the
kit. I packed it away some time ago and have a few questions regarding
mounting of the tail feathers on this bird. I've been working on the
fuse solely from the plans due to lack of enthusiasm toward finding the
manual and, so far, have not had any problems. Nevertheless, I'm sure
it's just a matter of time before I get bit. One mistake I did notice
was that It looks like the tailwheel gear doors are a little to wide
when comparing it to the documentation/books, but since this is my
first attempt at building in this area and a re-do would take alot of
carving and cutting and drilling and regluing, it will stay just like
it is.
That's it for now. maybe tonight I'll get a little more time and a
little more done.
Carl
|
1384.60 | Fuel tank finished | CSOA1::CTULANKO | | Wed Sep 22 1993 09:47 | 43 |
| Last night I had a chance to work on the fuel system. The tank I
assembled the day before still had full pressure, so it checked out
good. I wrapped it in foam and fit it inside the fuselage. What a
tight fit; it looks like there was just enough room alotted for a tank
this size. Afterwards, I decided to install the throttle servo and
linkage. I installed the servo in the middle of the fuse, which
shouold allow positioning of the cable to either side, depending on the
engine and mounting position. The linkage, on the other hand, was
another story. There is about a 1/2" difference in height between the
servo horn and the rudder/steering wing. I had originally decided to
use a ball link to allow for play and free up the system from binding.
Unfortunately, all the ball links that dubro make are for 4-40 rods and
won't fit on a 2/56. I wound up going with the old stand-by; a "Z"
bend with a snapper-keeper for the wing and a clevis at the servo horn.
This is the way 99.9% of my planes are run and the connectors have yet
to give.
The problem I'm running into now is I need an engine. I can't
sheet the fuse front until blind nuts for the engine mount are
installed, so, it's off to the hobby shop with that bonus money we
recieved. I have decided on the Saito FA91S four stroke. There was a
writeup in last months RCM on this engine. It has more horespower than
the O.S. 91 Surpass, 1.7+hp, and is lighter than their 71 Surpass, 18
oz. as compared to the O.S. at 24 oz. I have a friend in Minnesota
that scratch builds his own design of a .60 sized stick, has sold
hundreds of them, and is now using this as the engine of choice. I
called him up last night before I dumped money on an engine and got his
views on it's performance. Being that I'm an ol' O.S. fan, it took
alot of convincing! He also mentioned that it pulls his 6lb stick
vertical and out of sight right off the runway. In addition, the
ratings on props that were used for testing by the RCM boys showed
300-400 rpm better performance over O.S. when run on laaaarrrger props,
all the way to 15x6. Thats some serious torque! It sounds like the
engine should have no problem turning a multi-bladed prop. He also
mentioned that the engine has the same footprint as a .65 size, another
benifit. I'm hoping to run it upright , for that reason alone. It
will be less troublesome than an inverted arangement.
Well, enough babbling for now, tonight my woonderful wife gets
paid, and she's giving, YES, giving me the difference I need for the
engine. You guys jealous, or what?!
Running low on Midnight oil!
Carl
|
1384.61 | Engine Update | CSOA1::CTULANKO | | Tue Sep 28 1993 11:51 | 32 |
| Yes, we're still working on the beast, but have been to busy to update.
Last Thursday I purchased the Saito FA91S and, boy, is this thing
small. I compared it to my OS FS61 and it's about a half inch shorter!
Pretty impressive, and so was the writeup it got in RCM. Can't wait to
see it run. I spent most of Thursday drooling, then I went over the
manual, yes, manual that the hobby shop owner loaned me for the newer
version of the Corsair. I made a copy and looked hard over the section
about flaps, then realized that these must be of an awsome size. Sure
enough, when I returned his manual, we looked in the kit and the flaps
were huge! They were made of balsa stock and measured out at 13/16"
thick at the leading edge! Looks like we'll be making our own, since I
have never seen aileron stock this thick. I really liked the way they
did the flaps though, so this will be the method I use.
This weekend, I sheeted both sides of the wing saddle on the
fuselage and sanded them flush to the side of the fuse. Then I marked a
center line on the the firewall; kinda looks like crosshairs.
Afterwards, I made another vertical line @ 3/16" to the left of the
centerline. This allows for 2 degrees of right thrust while keeping
the shaft of the engine at the center of the cowl where it exits. I
put alignment marks on the engine mount, centered everything, and
drilled the mounting holes through the firewall while keeping the bit
at a slight(@ two degree) angle. Using a piece of 1/8" ply, I made a
thrust plate and drilled holes through it. The plate, mount and engine
were assembled and everything was checked for alignment and binding.
The blind nuts were installed and mounting bolts were cut to the
correct length.
The last thing I did was drill a hole for the throttle cable. I'll
hook up the linkage tonight and glaze the firewall, making it fuel
proof. Also, I will glue the blind nuts in and run the fuel lines.
that's it for now. Still running low on oil.
Carl
|
1384.62 | Epoxy Night... | CSOA1::CTULANKO | | Wed Sep 29 1993 10:35 | 14 |
| It was epoxy night last night. I glued the hardwood blocks in for
firewall support, then glued the blind nuts in for the engine mount.
Then I glued the thrust plate to the firewall and clamped it in place
with the engine mount. After this set, I removed the engine mount,
filled the mounting holes and throttle cable hole with wax to prevent
epoxy from draining down into the blind nuts, and fuel-proofed the
firewall by glazing it with epoxy. Everything was left to set
overnight. With any luck, I will get a chance to open up the mounting
holes and throttle hole tonight and run the throttle linkage. I had to
remove the fuel tank in order to finish the epoxy job, so I will also
re-install it and run the fuel and vent line tonight.
Carl
|
1384.63 | Engine mounted, tank installed | CSOA1::CTULANKO | | Fri Oct 01 1993 08:39 | 23 |
| Well, we accomplished a little more on the Corsair. Last night I
cleaned out the wax that I put in the engine mount holes and ran a
drill through to keep the holes round. Then, I installed the outer
control rod for the throttle and built a support for it about half
way down. After this, I hooked up the inner throttle cable to the
servo, then installed the engine mount and engine. the last step I
did for the throttle was to connect it to the engine and adjust it.
Now it was fuel tank time. I received the foam padding I put an
order in for, and went to town installing and padding the tank. Then,
I drilled two holes in the firewall for the fuel lines. The last step
I did was to cut a couple of 1" long pieces of fuel tubing, insert them
in the holes and epoxy the holes on both sides of the fuselage. The
glue should be set by tonight and all I will have to do is stretch the
1" fuel lines to remove them from the epoxied holes, then insert the main
fuel lines. Using epoxy for these exits allows for a nice, fuel-proof
fit when the fuel lines are run through, a method I've used on almost
all my aircraft.
Oh yeah, just one little note about last night; it was FREEEZZING!
The only reason I didn't continue to work longer was my hands went
numb, and I have a heater for the garage! Oh well, maybe I can get
some work done tonight before the blizzard sets in. 8-)
Carl
|
1384.64 | Sheeting?! Oh Sheet! | CSOA1::CTULANKO | | Tue Oct 05 1993 10:03 | 24 |
| We were on vacation yesterday and had some time to work on the bird
again. I removed the engine, since the alignment work for the fuel
lines had been completed. Then, I worked on the horizontal stab saddle
and got it aligned and glued in. Then I worked on sheeting. I
finished sheeting the bottom half of the fuselage from the wing saddle
to the firewall. Next, I sheeted the top of the fuse from the firewall
to the front of the cockpit. After this, I sheeted the top half of the
fuse (the turtle deck area) on the right side, then cut the piece for
the left side and glued the bottom edge down. These panels took alot
of fitting since there were both horizontal and vertical curves
involved. The next step will be to glue the left panel to the upper
formers and sand the top of these two panels flush with the formers.
I also installed two 1/16" ply plates for the rudder rod. It
travels through these and has a wheel collar on the top and bottom to
act as bearings for pivoting. In addition, I finished the tailwheel
door springing/closing system. I wound up spending most of the time
fitting side panels and the horizontal stab base. It was critical to
myself that the area of the stab was square and aligned as close to
perfect as possible; this effort took more time than I thought.
Well, it's off to work I go with hopes the day will pass by quickly
so I may return to the workshop to burn that ole' oil!
Carl
|
1384.65 | Shaping and Sheeting | CSOA1::CTULANKO | | Wed Oct 06 1993 10:46 | 12 |
| Last night I had a chance to finish the sheeting on the side of the
turtle deck. Then I sanded the top of this area flush with the top of
the formers. After this, I drilled the hole for the bottom area of
the rudder control rod and checked it for fit. I also glued the last
piece of the cockpit dashboard sheeting in, and sanded the back of the
cockpit sheeting flush with the former. In addition, I shaped one side
of the sheeting for the cockpit from the dash to the former (rear of
the cockpit).
We'll see if I can get back out there again tonight.
CUL,
Carl
|
1384.66 | Canopy sizing time. | CSOA1::CTULANKO | | Fri Oct 08 1993 11:43 | 15 |
| Yesterday I decided to fit the canopy to the fuse. I needed to see if
it would fit the turtle deck ok before I glued the top section of the
deck on. The plans call for two pieces of 1/8 inch balsa, laminated
together and the glued to the top of the deck. This did not seem thick
enough to get a nice top curve, so I needed the canopy cut out to see
if 3/8 inch balsa sheet would work. I cut the canopy out of it's form
and sanded all edges. Then I layed it on top of the fuse and, low and
behold, it appears that 3/8 inch thick balsa will work great and give a
more naturally rounded top for the turtledeck. That's what I'll be
using. In addition, I glued the last two spots of sheeting on the tail
end of the fuse sides.
That's about it for now,
Carl
|
1384.67 | Fuse is done for now. | CSOA1::CTULANKO | | Tue Oct 12 1993 17:00 | 41 |
| IT was a busy weekend in the workshop. I cut the top piece of the
turtle deck out of 3/8 inch balsa (this is the way it is done with the
new "gold edition" kit; I figured they fixed their old mistakes) and
cut a slot for the vertical fin. I must admit this was trial and error
and the first piece I made was a flop, too wide on the fin curve at the
front. The fin has spars that extend below it's bottom, so just laying
the fin on the top piece, drawing a pattern and cutting it out to a
fine front taper wasn't easy. I had to guess draw; the first piece
didn't make the grade, however it did give me a good pattern to go by.
After preparing the top piece and checking the fit, I glued it in.
Now came the fun part, shaping! I started with 80 grade sandpaper and
worked my way to 280 grade, and rounded the entire top deck. The
canopy fit well and the top looks even and well rounded. Next, I
finished the side walls of the cockpit and sanded the dashboard,
sidewalls and rear wall.
The neighbor next door came over and I was helping him out more
than working on my plane. He got a Pica Focke Wolfe 190 as a birthday
present several months ago and has been busy building the wing section
in my workshop. He doesn't have anywhere at home to work, so I invited
him over to work since I had two workbenches. He has the wing built,
rhom airs installed and the bottom sheeted. We were working on the
retract doors, which was the ole' "Make it up as you go" routine. One
retract is finished with doors installed, so he can work ont the other
side from that and free me up a little more to work on my Corsair. It
has been fun though, working on two planes at once, but I wouldn't
reccomend it for the weak-hearted.
I finally found the wing mounting blocks, or rather block, for the
fuselage. The hardwood block was one piece and had to be cut in two!;
no wonder I couldn't find it in my pile of wood. I cut the blocks,
epoxied them in the rear section of the fuse and glued some 3/8 inch
triangle stock underneath them for added strength. I also installed a
1/4 inch piece of ply in the front part of the fuse for the wing dowel
to plug into. Last but not least, the air tank for the retracts was
installed, with padding and supports, into the fuselage.
Tonight I need to glue the very rear former in, then put the fuse on
the shelf and start to work on the wing. OOhh BOY! $%$#^/
Til' then,
Carl
|
1384.68 | Winging It! | CSOA1::CTULANKO | | Wed Oct 13 1993 11:00 | 31 |
| Here's the wrap-up from last night. I spent a little time checking the
epoxied wing mounts and everything looks good and strong. I'll be
using a 5/16 inch wood dowel like the new kit uses, rather than the 1/4
inch dowel that the plans call for. The rear former was glued in flush
with the rear of the fuselage and the fuse was put on the shelf.
Now came the real work. I removed, with some work due to steel
rods having a little rust, yes rust on them, the 1/8 inch steel rods
and universal joints from the wing that were originally supposed to be
for the flaps. Then, I cut away all of the ply supports for these rods
from the ribs and cut out the balsa triangle supports that were added
to these ply pieces. This took some time and allowed me just enough
time to fillet the rear of the ribs where the ply was removed. I'm
glad to say that none of the ribs were damaged in the cutting process.
one of the last items on the agenda for the evening was the removal of
the original flap servo, which only took a few minutes.
There is one more job left to finish. I have to move the runs of
air tubing that were installed for the retracts. The tubing was run
through some scrap pieces of red sullivan outer pushrod tube to ease in
the removal/replacement/maintenance of the air tubing, if ever
necessary. However, it was run about one inch from the rear of the
wing, right in the way of where the new flap servos need to be
installed. Well, nobody ever said it was going to be easy. After the
move of the air tubes, the wing should be prepped and ready to start on
the "new" flap system; oh boy! It's starting to look like an easier
job than first anticipated, since the removal of the old flap control
system went so well.
No more oil, running on fumes!
Carl
|
1384.69 | Weekend Update.... | CSOA1::CTULANKO | | Wed Oct 20 1993 14:36 | 45 |
| What a busy week it's been! This is the first chance I've had to
update my progress on the Corsair. This weekend I only had Saturday to
do any work on the plane. The good news was that the air tubing
doesn't have to be moved for the flap servos. The bad news was the
fact that I was stuck at a point where I had to do the job I despise so
much, sanding! I sanded all the ribs and made them as even as
possible. then it came time for the hard part. I sanded and blended
the leading and trailing edges into smooth, transitioned curves. This
took most of the day because I had to make sure all the nooks and
crannies were completed.
Next on the agenda was the retract system. I wanted to check it
one more time before I covered it up with lumber. Sure enough, there
was a problem. The Robart retracts used ring shaped brass bushings
that slid over the plastic mechanics and rotated inside the frame. The
bushings had worked their way loose and the plastic mechanics were
riding inside the hole in the side plates of the frame. I was
concerned the metal frame would start cutting a gouge in the plastic,
so I repaired the bushings by reseating them and gluing them in place.
The next problem I encountered was that one of the air cylinders
was a little stiff. This was to be expected since the air system was
installed over five years ago. I injected a little refrig oil in and
it freed up and worked fine; well, almost. The retracts were binding
up because when they were installed, the travel length of the air
cylinders were never limited to the shorter travel needed to operate
the retracts. the retracts were set up so the air cylinder was fully
retracted when the retracts were up, but in the down position, the
cylinders overtravelled and slightly bowed the retracts actuator arm.
This was not acceptable, so I adjusted the cylinders so that they
were fully extended at down time and were still trying to pull up
during retract time, but would not go any further due to stops in the
wing. Sounds like the overtravel problem was solved? Almost!
What happened next(this is sounding like a nightmare from Elm St.)
was absolutely unreal! The retracts traveled down great and locked in
place. I flipped the switch and they went up just fine, or at least
I thought so at the time. I flipped the switch one more time to lower
the gear and, all of a sudden, the right gears actuator horn was bent
into the ribs and jammed and the retract made it about half way down!
dam*&(%#! Well out of frustration, I put the wing on the shelf and
started to think of a way to clean up the mess!! To be continued....
(don't yo hate when someone does
that right at the juicy part?!)
Carl
|
1384.70 | Retract Nightmare, Part Two: | CSOA1::CTULANKO | | Wed Oct 20 1993 15:42 | 66 |
| Well, here goes the update. Couldn't keep you waiting that long!
After a few days of contemplation regarding the retracting problem, I
had come up with several alternatives. I could rip out the entire air
cylinder system and re-route it using extender arms for the actuator at
the retract end, but it meant the ouside ribs would have to support the
stress of the cylinders movement. Or I could trash the Robart 102's in
lieu of their new 165's which were designed for the new gold edition
Corsair. This meant shelling out another ninety bucks; forget that!
More important purchases were up and coming, such as a new receiver,
battery pack, fuel pump, servo leads, glue, finishing resin,etc...
To help eleviate the pain, I received a phone call from the hobby shop
owner that a plane I had in his shop had sold. Great! I flew to the
shop and picked up the list of supplies I needed excluding the
retracts. I did, however, take a good look at them and the new Robarts
are indeed nice. Carring all my goodies home, I now had renewed
enthusiasm in the plane and last night, I took the wing inside to get a
fresh start, and stay warm. The wife was playing with here Sega, (and
this is how you do it guy's!), that I bought here as a suprise birthday
gift with some of the leftover plane sale money! One other tip, tell
her up front that you still may need to make a few major purchases to
complete your current building project WHILE she is gloating over the
gift. They have a memory that never forgets, which, in this case, is a
plus for you. She'll agree to almost anything at this point, so keep
the tape recorders rolling!
Anyway, back to the problem. I fitted and filled a spare air tank
in order to help me troubleshoot the problem I was having. I had
decided to keep the current configuration and make it work, which
turned out to be a good move. The right air cylinder was moving
forward ok and moving rearward fine but during the next "gear down" run
I caught the problem. What was happening was the ball clevis I had
attached to the air cylinder would work fine while the gear went down
for the first time, but when the gear came up, the threaded rod that
screws into both the cylinder rod and clevis was backing out of the
clevis about 1/4 inch. The next time the gear went down, the clevis
adjustment was too far forward and was jamming the actuator arm into
the ribs. Whew! Something I can fix. I noticed that the all threaded
rod was a little thinner than usual, so I trashed it and cut one from
thicker rod stock using a 2-56 die. This rod worked like a dream and
screwed snugly into the ball clevis. I snapped the clevis on the ball
joint attached to the retracts actuator arm and flipped the switch!
The retracts didn't move!!! I tried down, up, down, nothing. Oh
great, another problem.
What happened was the air hose had warmed up and expanded a little
in diameter when I brought the wing into the warm house. Normally not
a problem, but I put 1/8 inch wheel collars over the hose and used this
to adjust for retract speed, an old method tried by many but, and I'm
only guessing, mastered by few. when the wing came in the house, the
restricted air flow became no air flow! Of course, I didn't realize
this was the problem until I checked the air tank to make sure it was
holding air, which blew a hose off that was under pressure, sending
freon and air all over the place and lifting the wife off her chair
about two feet. Rule number 23765: NEVER work in the house and remove
a pressurized air hose while the kids are sleeping!
I backed out all the wheel collar set screws, after reconnecting
and charging the system, and the retracts worked fine but fast. In
order to prevent the clevis from ever being pulled out again by a air
cylinder shaft under pressure, I installed a travel limiting wheel
collar on each cylinder shaft that will stop travel just at the tire
seats itself in the wing. I played with the restrictor collars, but
finally gave up on them. Tonight I will install those Robart air
restrictors I originally had in the plane that work just fine.
That's it for now, another good time last night with alot of
problems and headache left behind. Tonite I may even begin sheeting
the wing. OOHHHH boy!
Carl
|
1384.71 | Retracts Completed! | CSOA1::CTULANKO | | Thu Oct 21 1993 10:41 | 52 |
| It was a great night last night. The temperature was in the seventies
with a strong breeze that helped keep the workshop comfortable. The
retract system was working well, but I still needed to install air
restrictors in the lines. After examining the lines, I came to the
conclusion that the Robart air hose that came in the air support kit
was too soft. At one point I could simply pull off the line with
little effort from one of the cylinders. Not good. Also, I did not
like the way the hose was temperature sensitive in so far as the way it
expanded when warm. I decided to replace all the air lines with some
leftover Rhom air line I had purchased for the tailwheel cylinder.
I removed all the lines one at a time and installed the new Rhom
hose. Since I had the opportunity, I left a little additional hose at
each connector. This was done just in case I ever had to remove a hose;
I could trim the end that was expanded (from being installed on the
fitting) and start with a fresh new piece. The "T" connectors were
re-installed for the tailwheel and quick disconnects were placed at the
ends of two short pieces of line; these connect to the tailwheel air
system inside the fuselage. The quick disconnects are the one of the
nicer ideas Robart had; the are quarter-turn disconnects that seem to
seal well.
During the installation of the new air hose I incorporated the
Robart air restrictors, which are simply a brass female to female
fitting with a normal sized hole at one end and a pin hole at the
other. One little note; there are no instructions on how to install
the restrictors, however, the retracts appeared to work better when the
pin holes were on the cylinder side.
After everything was connected, I charged the system and ran a
final test on the retracts. The right retract was not coming down all
the way, so I removed the restrictor and checked to see if it was
blocked in any way. I ran a #80 drill bit through the hole, which at
the time felt like it removed a burr. To insure the pin hole was not
going to be a problem, I went to a #76 bit and enlarged it. The
restrictor was re-installed and I tried it again. This time everything
worked fine except the right retract was coming down faster than the
left. It was surprising how sensitive the restrictor's pin hole size
was. I installed a new restrictor from another pack, also purchased a
long time ago, and the system worked well; gear traveled up and down
and locked in place each time. It looks like the burr I felt while
cleaning out the pin hole was the problem.
I called it a very successful evening and planned what would be
done tonight. I would like to ever-so-slightly notch the cylinder
shafts to insure the wheel collars I installed as travel stops won't
come loose. I plan to build an access door to cover the air lines
in the wing. This will prevent the lines from tangling up with any of
the servo mechanics in the fuse and keep the system looking neat and
clean. Then, it will be time to examine everything one more time
before I begin sheeting the wing.
Til' then,
Carl
|
1384.72 | Ready to sheet | CSOA1::CTULANKO | | Fri Oct 22 1993 10:14 | 18 |
| Last night was a cold one, so not much time was spend in the workshop.
I did get a chance to go over the entire retract system, checking for
tight lines and no binding. Then I charged the system and ran my final
acceptance test. The retracts went up and down beautifully and finally
slowed down after about 30 up/downs, which meant there should be plenty
of charge in my larger Robart tank to run the system. Afterwards, it
was time to notch the cylinder shafts in order to help tightly seat the
travel limiting wheel collars I had been using. This was done and
everything was checked out one more time.
I built a hatch for the rear of the wing where the air lines reside
and will install it tonight. The last thing I did was I located the
stack of balsa that will be used for wing sheeting and seperated the
good from the not so good. Most of the sheets were of the same
consistancy, fairly flexable and soft, while only two were very stiff.
IT looks like it's sheeting night tonight, barring any unforseen
mysteries that may crop up.
Carl
|
1384.73 | Wing sheeting begun... | CSOA1::CTULANKO | | Wed Oct 27 1993 08:44 | 23 |
| It was a good weekend for honeydoo's that I had backed up, so we played
catch up in order to give us some time in the workshop. After the
chores were through, I made a bee-line for the shop to continue work on
the Corsair and guess what I found? The R/C builders dwarf must have
visited me the night before and felt sorry for me working on a scale
bird, so he refueled the ole' lamp and were ready to go again.
I finished building the hatch for the air lines and glued the
supports in for it. I then drilled four holes and screwed the hatch
in, which now covers the air valve and all the hose comming from the
retracts. A small slot was cut on one side so the two tailwheel lines
and the air tank line could exit. No longer is their any fear of air
lines getting tangled in the fuselage linkage.
Next, I worked on wing sheeting. Four three inch pieces of 3/32"
balsa were glued together length-wise and sanded at the seams. Then, I
glued the "Big" sheet to the left outside wing panel bottom and trimmed
the edges, leaving about 1/8" on all three sides for sanding.
Afterwards, I started making another large sheet, but had to call it
quits for the night. I should be back in the shop tonight, so I'll
pick it up where I left off. You really don't get an idea of how "big"
the wing surface is until it's sheeted. Just doing one tip panel makes
it look huge; there's going to be alot of lumber on this wing.
Carl
|
1384.74 | Wing panel number two | CSOA1::CTULANKO | | Thu Oct 28 1993 10:21 | 20 |
| I had a chance to work in the shop last night. The second bottom wing
panel was constructed and all seams were sanded flush. Then I glued
the panel on and applied fillet glue to the inside of the panel. The
next step was to cut out exit slots for the aileron pushrods. I got
one slot cut out and will finish the other one tonight. This was a
more difficult task then originally anticipated, since the horns for
the ailerons were already mounted. When I built the wing and ailerons
several years ago, I wanted to mount the horns without hardware
sticking out of the top of the ailerons. I build ply supports
inside the ailerons during construction and installed 2/56 blind nuts
in the supports so that the horn could be mounted from the bottom with
bolts. Because the horns were pre-mounted, it took a bit of guess
work regarding where the slots were to be cut.
We will give it another go tonight. It took me almost two hours
last night to do the work that got done, but things should move a
little faster tonight.
Lamp's burnin' brighter than ever,
Carl
|
1384.75 | Top tip sheeting done. | CSOA1::CTULANKO | | Mon Nov 01 1993 10:33 | 37 |
| This weekend was a busy one again, seeing how we actually got about
four inches of snow Saturday. I spent most of the day outside with my
two and a half year old daughter, playing in our first snow for the
season and building a snowman.
I did, however, get a chance to work a little on the plane. The
second slot for the other Aileron pushrod was cut and I started working
on the top sheeting. A trip to the hobby shop was in order, since I
had used up some of the sheeting that was for this bird on other
projects. When I got home, I started on the top sheets and made both
sheets at once. One thing I did do was change the sandpaper on my
sanding "T". This made sanding the seams a breeze; a few swipes with
fresh paper and the sheet was ready to be sized to the wing and glued.
After this, I glued the sheeting on each top side of the outer wing
panels. During the gluing process, I applied some hanger rash to one
of the lower panels. I forgot about aileron pushrods sticking out of
the bottom panels and, while I was holding the first top sheet in place
while the glue dried, I wound up pushing the rod into the bottom balsa
sheeting. Fortunately, it left only a small dimple that could easily
be filled, however, this was not going to happen to the other panel
that had yet to be glued. I cut a couple of balsa spacers out of
leading edge stock and tac glued them between the aileron pushrods and
the lower sheeting. This prevented the same thing from happening to
the other side, which was glued on next.
Afterwards, it was time to sand. I first trimmed all the excess
balsa from the edges with a razor, getting as close as I could without
taking to much off. Then the leading and trailing edges were sanded
flush. I still need to round the leading edge, which should not take
very long. I also sanded the tips of the wing flush with the end rib.
When I finish with the leading edge, I can start on the curved wing
center on the bottom. The instructions call for starting on the top,
however, I need to build/glass gear doors and fit them while I still
have access to the landing area through the top of the wing, so I'll
start on the bottom. Will keep you updated; we're starting to get to
the good part, gear doors.
Carl
|
1384.76 | Sheeting the curve. | CSOA1::CTULANKO | | Mon Nov 08 1993 10:50 | 34 |
| Well, the Corsair is coming along pretty well. Thursday I built the
mounts for the left flap servo, but ran out of 3/8" hardwood rail to
finish the other side. I also ran out of threaded pushrod, so Friday I
made a trip to the hobby shop and picked up a stick of hardwood and two
twelve inch pieces of threaded rod. Saturday, I installed the other
flap servo rails and screwed both servos into thier mounts. Then I
cut oval slots through the ribs in order to run the servo wires into
the wing center area. I connected the "Y" connector for the servos and
began working on the pushrods.
Both rods were cut to length according to plans that call for the
clevises to be centered over the trailing edge when the servos are
centered. I connected the servos to a receiver in order to center
them, then mounted the horns. The rods were installed with a "Z" bend
at the servo end and a clevis installed at the flap end.
Sunday, I started the wing sheeting on the bottom right side. The
rear end of the wing, from the middle of the center spar to the
trailing edge, was done first. I wet down the balsa to make the curve,
which worked out pretty well. I was fighting a pushrod for the flaps
which wanted to position itself across the ribs rather than stay in the
bay. I lost. After the sheeting was done on the rear side, I noticed
a small bulge in the balsa. Sure enough, the rod was caught between
the sheeting and ribs. I don't mind admitting these goofs; hopefully
someone besides myself will benifit from these mistakes. The problem
was solved and sheeting continued (I also made a mental note to TAPE
down the other pushrod before sheeting the wing).
The front part was sheeted next in strips of balsa for 1 1/2" down
to 3/4" wide. After this was completed, I sanded all the seams flush
with eachother and trimmed the inside edge flush with rib number two.
Also, leading and trailing edges were sanded flush. Now it's time to
start on the other side, which should go well since all the bugs (and
pushrod problems) are worked out. Til' next time.
Carl
|
1384.77 | Bottom almost done. | CSOA1::CTULANKO | | Wed Nov 10 1993 13:30 | 17 |
| Two nights ago I worked on the other side of the wing. This time I
built two support ribs, removed the tire from the landing gear, and tac
glued them in around the wheel well. I did this because , when I
sheeted the first side, the area around the wheel well turned out a
little flat instead of well curved. In order to prevent this from
happening again, I decided to use support ribs that could be removed
after the sheeting was glued on. This worked well and the curve came
out nice and even. By the was, it just so happened that the peak of
the curve was around the wheel area, hence my concern.
Last night I finished the section from the center spar to the
leading edge and sanded both edges flush. Then, I started on the
center section. I finished the center sheeting from the center spar to
the trailing edge and will finish the rest of it tonight. Next, it
will be time to sand all seams and sheeting to a nice, flowing curve.
Carl
|
1384.78 | WING BOTTOM READY TO GO | CSOA1::CTULANKO | | Fri Nov 12 1993 07:50 | 11 |
| It was another busy night in the shop last night. Wednesday, I
finished the bottom center section, sanding leading and trailing edges
and all seams. Last night, I glued a piece of balsa in the wheel well
area of the wing side that came out a little flat. Then, I shaped
both sides of the wing bottom to an even curve. I worked with 80 grit
sandpaper and worked my way down to 320. Everything looks good and
tonight I will monokote the area around the wheel so I can glass some
landing gear doors. Who knows, I may even have time to lay some glass
cloth for the doors themselves.
Carl
|
1384.79 | Gear Door glassing begins. | CSOA1::CTULANKO | | Mon Nov 15 1993 15:28 | 21 |
| I had a chance to do a little work in the shop Friday night, but
couldn't get out their the rest of the weekend. The wing was sanded
and ready for monokote so I used some old yellow monokote and covered
both undersides of the wing around the landing gear and retract servo
area. I decided to do the retract servo area because there was no
other access to the servos once the wing was fully covered and I wanted
some kind of access in case of servo failure. So I thought, since I was
going to glass the gear doors, why not build some access hatches.
Better safe than sorry, meaning I'd hate to have to cut into a finished
wing to fix a problem.
I used some heavier glass cloth, 6 oz. Sig, and cut out the pattern
for each side. Then I tack glued the cloth, brushed on epoxy when it
was tacked in place and pressed the epoxy in with TP. It really
conformed to the compound curve of the Corsair wing and came out nice.
Only one side was done and I checked on it the next day after it cured
overnight. It really looked good but appears too thin; I think it still
needs another layer of cloth. I'm going to try to get out there tonight
to start the other side and put a second coat over the first form.
Carl
|
1384.80 | first layer, second side done | CSOA1::CTULANKO | | Thu Nov 18 1993 13:15 | 10 |
| Last night I spent about 1/2 hour in the shop, just enough time to
glass the doors for the other side of the wing. If I have the time
tonight, I would like to get a second sheet of glass on both sides,
then finish with a layer of ultra light .56 cloth so the heavier
weave from the base cloth won't show. The .56 cloth should give me a
nice outside finish.
Later,
Carl
|
1384.81 | Second layer done | CSOA1::CTULANKO | | Tue Nov 23 1993 10:40 | 9 |
| This weekend I had a chance to work on glassing the doors again. I cut
two more pieces of 6 oz cloth, mixed up more finishing epoxy and
glassed the cloth over the first layer. It came out well; it just
needs some very light sanding, then it will be ready for the final
layer. The top cloth that I will use is .56 oz. It is very light and
should give a smooth surface, without weaves showing, to sand.
Carl
|