Crooked wing
11-26-2003, 09:16 PM
#1
Crooked wing
When i was assembling an ARF I manged to get the wing mounted on the fuse a little crooked. one wing tip is abou 1/4 inch different than the other wing tip when measured from the tail post.
I cannot fix this without major rebuilding. Now the question.....
How should I mount the Stab and Elevator? Should I make the wing and stab line up equaly crooked? Or perpendecular to the CL of the fuse or some other set up so that the errors will null themselves out?
Sparky
I cannot fix this without major rebuilding. Now the question.....
How should I mount the Stab and Elevator? Should I make the wing and stab line up equaly crooked? Or perpendecular to the CL of the fuse or some other set up so that the errors will null themselves out?
Sparky
11-26-2003, 09:35 PM
#2
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RE: Crooked wing
You should still mount the tail feathers as accurately as possible (that is, use the fuselage as the measuring point not the wing).
1/4 inch error on the wing isn't going to be noticable once you have trimmed the model in flight.
-David C.
1/4 inch error on the wing isn't going to be noticable once you have trimmed the model in flight.
-David C.
11-26-2003, 10:14 PM
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RE: Crooked wing
Depends how big your ailerons are.
I once saw a guy try to fly a p-51 with a slightly crooked wing, but his ailerons were small and he could correct it. What type of airplane do you have? If its an aerobat, it will be all right.
I once saw a guy try to fly a p-51 with a slightly crooked wing, but his ailerons were small and he could correct it. What type of airplane do you have? If its an aerobat, it will be all right.
11-27-2003, 01:46 AM
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RE: Crooked wing
If it has much dihedral at all it's going to be a problem too. I'm assuming from your note that the wing is twisted with one tip further forward than the other?
1/4 inch doesn't sound like much but it is enough that on a trainer with dihedral it will make the model funny to fly. How much is the question. What's done is done so you may as well finish it and try it. If the trims being off to compensate make the model odd to fly then you may have to bite the bullet and do that repair.
1/4 inch doesn't sound like much but it is enough that on a trainer with dihedral it will make the model funny to fly. How much is the question. What's done is done so you may as well finish it and try it. If the trims being off to compensate make the model odd to fly then you may have to bite the bullet and do that repair.
11-27-2003, 10:45 AM
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RE: Crooked wing
I would use the cl of the fuse to line the tail feathers,then trim the plane in flight. If you're in the TOC group of fliers you will probably notice a trim problem in some moves, if you are a weekend flier like the most of us, then I dough you'll notice any problem,go fly,have fun.
11-28-2003, 11:47 PM
#6
RE: Crooked wing
The plane is an ARF 3 D plane with no dihedral. The reason the fuse wing is crooked is because this is the second fuse since I had a "little shunt" with the first fuse. I mounted the stab parrell to the wing so it si a little crooked as well. I doubt it will be noticable in the hover when it warms a little I will get a flight on it and report back.
Thanks for the feedback.
Sparky
Thanks for the feedback.
Sparky
12-06-2003, 02:51 PM
#7
RE: Crooked wing
That's not anything to worry about. A small amount of error is negligible. I have a trainer and the main wing is not parallel with the stab looking from in front. Not even an issue. No trim was even necessary. Depends on the error and the model.
Joe
Joe
