| 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 |
My son is building a Ridge Runt, and we are having difficulty figuring
out the correct dihedral angle.
The instructions say 1 1/8" at the wing tip, but if we assemble at that
the wing brace is proud of the top spar, and misses the bottom spar
completely at the end. The "natural" angle that the wing would like
to be joined at is about 1 3/4".
To check that he had not glued it into the first wing incorrectly, I
took the wood that he had pressed the wing brace from and extended
the brace angles on a piece of paper - sure enough 1 3/4".
Has anyone else found this? What angle did you fix the wing at?
I understand that the RR is manufactured by a US company, but there
is no name, address or phone number anywhere. Does anyone know the
telephone number of the manufacturer.
Stewart
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 1689.1 | Some thoughts | SNAX::SMITH | I FEEL THE NEED | Fri May 17 1996 08:38 | 28 |
Naturally, this is all speculation without being able to see the plane
and plans but here's some thoughts.
A "very small" error in cutting the angle into the wing brace will
result in a much larger error out at the wing tips. I'd bet a 16th of
an inch error in the brace could result in a half inch or more at the
tips. Does the wing brace V shaped angle match the plans?????
There could also be an error in the building of the wing itself. If the
spars aren't in exactly the right position, the wing joiner/brace won't
match up.
Did you buy the RR mail order or from a local hobby shop. In most
cases, Tower Hobbies for example, they have technical assistance
available over the phone. If this is a problem with the kit design,
other people may have already called. There could also be an error in
the instructions and 1 3/4 of an inch dihedral may actually be the
CORRECT measurment.
Lastly, don't worry about it. Assuming the structure is sound and this
deviation in dihedral isn't due to a building error, MORE dihedral
won't hurt you. I don't know what your or your son's flying skill level
is, but the plane will only be more stable with more dihedral. You may
loose some aerobatic performance, due to the added stability, but that
may not be an issue if your still at the beginner level. Go ahead and
put the wing together and go have fun with it.
Steve
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| 1689.2 | It'll be fine | CHEFS::HORNBY_T | Soarers are rarely Silent | Fri May 17 1996 14:07 | 11 |
Hi,
I haven't got one but I think the Ridge Runt comes from the
Sailplanes International stable. I'm not sure if there around any more
so I guess you must have purchased from a model shop.
As previously mentioned ..go with the 1.75" it won't spoil you're fun.
If you need any local help give me a ring 782-2041
Rgds
Trev
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