Bowed Trailing Edges On Finished Wing ??
 

Hi,

I'm finishing up a 4*120. The wings are epoxied together and I'm doing final prep for covering. However, I noticed that the trailing edges on both wings have a pretty good bow to them. I actually noticed it earlier befor the wing halves were joined but after both were completely built. I have read several threads on this and am looking for a bit more reassurance. The wing halves themselves are not warped, just the trailing edges up to where the TE sheeting ends. Looking down the wings evrything else is straight and in line. Since the wing is complete I don't want to have to tear the whole TE apart and redo it. Can this be fixed safely using 50/50 water and ammonia ? The bow is somewhat considerable....maybe 1/4" out on either end. From what I've read, bows are definately better than warps, but I'm worried that it just being the TE and not the whole wing It will impact how it flies. I also don't want to have to bow my ailerons to match the TE bow. Honestly, I don't even know how they got bowed in the first place. They were built on a hard flat table with 3/8 drywall on top for something to pin into. The fin and stab were built up on the same board and came out perfectly true. Any suggestions or comments would be greatly appreciated. I can also supply photos if needed.


Thanks a bunch :)


Adam

RE: Bowed Trailing Edges On Finished Wing ??
 

You can indeed use ammonia and water at a 50 / 50 ratio and then weight the offended area down and allow to dry over night. You can also remove some of it with the covering. Good Luck, Dave