warped spitfire wing
#1
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From: Ottawa, ON, CANADA
I have built a TF 60 size spitfire... Somehow the main wing is twisted on one side...This is a fully sheeted 1/16 balsa wing.
I am wondering if anyone has some tips on how to straighten the wing... I was thinking of using alcahol and water to soak the wing skin and use wieghts.
Any other techniques out there?
Thanks.
Ablais
#2
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ORIGINAL: ablais007
I have built a TF 60 size spitfire... Somehow the main wing is twisted on one side...This is a fully sheeted 1/16 balsa wing.
I am wondering if anyone has some tips on how to straighten the wing... I was thinking of using alcahol and water to soak the wing skin and use wieghts.
Any other techniques out there?
Thanks.
Ablais
I have built a TF 60 size spitfire... Somehow the main wing is twisted on one side...This is a fully sheeted 1/16 balsa wing.
I am wondering if anyone has some tips on how to straighten the wing... I was thinking of using alcahol and water to soak the wing skin and use wieghts.
Any other techniques out there?
Thanks.
Ablais
Cut some thin slots in the sheeting (about 1/16" wide - 2 or 3 on each side will be fine ) to allow the sheeting to shift without buckling and cracking (hopefully ).
Next, weight the wing down with zip lock bags filled with sand. Slide shims under the side/area you need to straighten. Let dry for a couple of days.
Remember to shim it a little more that what you actually want since the wing is going to "rebound" a little when all the weight is removed.
Fill the slots with light weight filler and sand flush/smooth.
#3
Senior Member
Steam is a good thing, too. Hold the wing over a big pot of boiling water until soaked and then weight it down in postion. Let it dry a minimum of 24 hours or longer if you can stand it...Steaming hot towels can work, too. You're liable to have to do it more than once to get it where you want it.
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Joined: May 2005
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From: Petaluma, CA
That Spitfire is one fine plane.
I like steam. I've built tons of warped wings, some worse than others. Fully-sheeting wings are tough--the warp's kind of locked in there. But water will work wonders. Steam is good for smaller pieces, for whole wings I'll use a bucket of hot water and a washrag. Really soak it in. Then weight it for at least a day. I've never had to cut the sheeting. Sometimes I overdo it and it warps the other way, but usually it's not too bad. If I can get the twist down to half an inch or less, I can usually get the rest out with the covering (same way you add washout to trainer wings).
I like steam. I've built tons of warped wings, some worse than others. Fully-sheeting wings are tough--the warp's kind of locked in there. But water will work wonders. Steam is good for smaller pieces, for whole wings I'll use a bucket of hot water and a washrag. Really soak it in. Then weight it for at least a day. I've never had to cut the sheeting. Sometimes I overdo it and it warps the other way, but usually it's not too bad. If I can get the twist down to half an inch or less, I can usually get the rest out with the covering (same way you add washout to trainer wings).



