| Title: | Welcome To The Radio Control Conference |
| Notice: | dir's in 11, who's who in 4, sales in 6, auctions 19 |
| Moderator: | VMSSG::FRIEDRICHS |
| Created: | Tue Jan 13 1987 |
| Last Modified: | Thu Jun 05 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 1706 |
| Total number of notes: | 27193 |
At our once_in_five_years funflight contest I won a kit of a biplane
called "Zaunkoenig" (wren, dictionary says). First I didn't want to
build it, because I want to do more in the bigger models. Last sunday
I looked at this kit and started glueing. 8 hours later it was ready
to be covered. After 5 evening sessions it was ready to fly.
It's absolutely easy to build, the most difficult thing was to build
in the dihedral (sp?). The wings are being built straight. Then
you cut in the middle of the wing the spar, leading edge and trailing
edge just 2/3, not cpmpletely. Put glue into the cut and bent the one
half of the wing upward. Glue some sheeting on the top, and for the
lower wing add a bottom sheeting. The lower wing gets some ailerons.
For making the hinges take a needle and string and sew the surfaces
to the trailing edge.
dihedral:
glue _______
V
------------- ---------------
|_|
--------------------------------
^
|____ bent upward
hines :
aileron
+-----------------------------------+
|_____\_\_\_\_\_\___________\_\_\-\-|------
+------/-/-/-/-/-/-----------/-/-/-/----------
| trailing edge
The plans call for a COX engine with the tank as engine mount. I
soldered an aerobatic tank and took the COX 09 Medailon. The servos
I mounted side by side lengthwise (the plans call for a mounting
perpendicular to flight line)
Now I'm waiting for the first chance to get this baby airborn. I'll
keep you informed.
some technical details
wingspan 16.1 inch (41cm)
fuselage legth 16.5 inch (42cm)
weight (as described) 440 grams (15.5 ounces)
could be 350 grams (12.5 ounces) with
COX DRAGONFLY 049 and micro receiver/servos
functions ailerons, elevator
engine COX 049,051,09
radio 2 standard servos, one standard receiver,
one not_so_standard_but_maybe 150mA battery
pack
flying characteristics: not so docile to extreme manouvrable
(thermal veterans might need to change flying
habits)
Because the plane's so little I could copy the plans and send it via
inhouse mail - an english description will come with it.
Any interests ? Just send me a mail....
\\
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\ \ /LO |
.o^^^--------==========___/
< \ \-''
'-___-'\ \
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\ \ Holm- und Rippenbruch,
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\\ Bernd
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 1388.1 | setup, flight experience and... | KBOMFG::KNOERLE | Fri Nov 29 1991 04:53 | 77 | |
Well, let's start with the flying first. The CG of the Zaunkoenig
was where it's supposed to be, without adding any trim weight.
The elevator throw was set to 1/10 inch as a friend of mine suggested.
He has flown this birdy before and this was a strong advice.
The ailerons were set a little bit more. The engine is a COX
Medallion 09 with a 7x4.
Following shows the installation of the radio :
on/off switch
/
____________/__________________
. /_______ +--/-+ +-------------+ ---
==+== // | | | | servos | -----
===== // | +----+ | elevator & | ______
__=_=_=__// tank | | ailerons | ___________
/ COX 09 || |_______ +----+--------+ to elevator
| |+---------+| nicad| ===="====_________________________ >
===| | |150mah| +
\ |+-----------+| | \____________|
\ || receiver | |______| |<--- aileron horn
'-_____|=============__________________________+_________________
It's actually pretty much this size and this tight.
FLIGHT REPORT
I filled the tank and started the engine without too much trouble.
The function were verified for correct direction. Knees where trembling
to a certain extend and then I threw it with a little upward direction.
I wouldn't have believed it but the engine pulled the Zaunkoenig
right up. A little down and left trim and the bird flew straight.
It was not oversensitive at all and followed exactly the steering.
What a surprise ! I was expecting a nervous plane and was getting such
a nice flying little thing. I'm gonna build a new one. Aeh....
Well, I guess it's time to tell the whole story. I didn't check the
range of my radio. I thougt it would not be necessary because it worked
flawlessly in the Klemm 25. BUT there the antenna was streched to its
full length. Here it was streched only 1/2. And in the plane before
the Klemm, it was streched 1/2, too. And that one crashed because
an unkwown reason - unknown till yesterday.
What happened - I flew the first turn perfectly, the plane parallel
a little away from me (the antenna in the most effective way). When
the next turn towards me the effective length of the antenna in view
from the transmitter got very small causing the Radio not to work.
It crashed full speed with an angle of 60 degree on the ground.
Fuselage broke, wings and everything else survived. A following
range check showed that with just 1/3 of the full antenna length of
the transmitter I just got maybe 30 feet ! Dunno, I could have
checked that earlier.
Anyhow, to build a new fuse will take just few hours, waiting for the
paint to dry will be the majority of time. And it flies great, is
very convenient to transport and CHEAP.
\\
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\ \ \ \
\ \ \ \
\ \ / \_\
\ \ /LO |
.o^^^--------==========___/
< \ \-''
'-___-'\ \
\ \
\ \ Holm- und Rippenbruch,
\ \
\\ Bernd
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