The foam wing on the Lightning 20-10 has a m0lded leading edge glued on already. I plan to sheet the trailing edge 1 1/2" wide. Without sheeting the rest of the wing what is the stiffest or what will keep the wing straight during about 10 G maneuvers. Some spars top and bottom, or a geodesic pattern with 1/64" ply?? Or will it hold up with just the sheeting on the l.e. and t.e.?? Regular rib wings seem to do fine with a spar top and bottom.
I looked at the Twister plans and it shows much less than I have on the foam wing. So I will go with a 1/4" sq. spar top and bottom. The landing gear blocks will butt against the spar and will meet at the root glue joint. I plan to add some ply to the blocks at the joint too. After glueing the cores together I will sheet the center section so there will be an unbroken wood across the joint. The bellcrank post will attach to the landing gear blocks for strength. Should work.
Subscribe to:
Post Comments (Atom)
2 comments:
I was thinking that the spars top and bottom should be sufficient as long as they are anchored to the foam well.
I used carpenters glue to attach the leading edges. I read that half the weight is water which dries off whereas epoxy is all there after it cures. I plan to use carpenters glue on the spars also. Probably spray glue on the center sheeting and epoxy on the landing gear blocks.
Post a Comment