Tiger 60 kit.

I glued the fuse doublers around the wing area with titebond and when I dry fit everything the fuse sides both bow to the right....
While this may help with right turns its not what I want...
I sprayed lightly with water and wieghted it flat overnight but itstill bows right.

3-4 builds and I havent run into this before..

Is this a defect in the wood?
If they bowed in opposite directions they would cancel out.

How common is this? Will it pull together when glued up?
If I wet and bend in the opposite direction can I get the bend out?

Thanks for any help..

I'll move onto the wing for now..

Steve

Are those lightening hole just aft of the LE of the
wing saddles in pic #3 ?

If so, are they suposed tp be removed ?


Bob

Popriv,
It has been my experience that this is caused by one fuselage side being stiffer than the other. You have two options;

1. Take apart the bulkheads you have already installed and re-cut and replace one of the sides with a like sheet of balsa. You can have either two stiff sides or two soft sides but they must be close to the same density.

2. I draw a straight line on my building surface that is a little longer than the fuselage length. You can use the plans here if you have a topside view of the fuselage. I temporarily fit the bulkheads and align the fuselage centered over the line/plans and see if they are going to bend approximately the same amount. If that looks ok I glue in the first three bulkheads and then clamp or weight down the front half while I temporarily install the remaining bulkheads and pull together the sides at the tail, being careful to keep the fuselage sides centered on the line previously drawn. If it doesn’t want to align up straight then you can wet the outside of the fuselage side that doesn’t want to bend. This will cause that side to expand and bend a little better. After everything is straight then glue everything in place and clamp everything in place and wait for it to dry.

Good luck and let us know how it works out.

Because it is a lock together structure, I would rubberband the forward together and see if it will lock straight. If you want to get picky most planes are crooked even if it is just a smidgen. I thought I got my last fuse perfectly straight, but no. You can lightly wet the one side that curves out and block an opposite curve in it and let it dry. Should be ok.

I would have used alot more water and instead of pressing it flat overnight or whatever.......overbend it a good bit. I would also make it wet enough,or keep re-wetting it(dont be afraid to use alot of water) so that it can soak into the wood good (maybe 1/2 hour,45min) then while its over bend dry it with a heat gun good. This is how I always form my sheet balsa when doing contours and it works great.

And yes,I've always found that if pieces bowed in opposite directions will cancel each other out as long as they are close to the same density. Keep us posted!