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Foam wings

Stuka Stunt Main Forum · 3 of 3 known posts recovered

James Mills · Apr 05, 2009 06:11 PM

#0 source
Would there be any benefit to laminating fiberglass between the balsa skins and the foam over the landing gear clips and spar?

James

Lou_Crane · Apr 06, 2009 03:24 AM

#1 source
Shouldn't hurt...

A bit of extra fuss, though. The strength of a sheeted foam wing is mainly at the surface. Yep, where the air meets the paint... The foam is to hold the sheeting in the proper place and shape to do what we need.

Still, local reinforcement of stress points - particularly things like the gear mounts and hinges - is not a bad idea. Think about where the stress is applied to the foam (which is what will tear away under excess loads or shocks). The more you can spread these loads, the more able the foam will be to withstand them.

Next?!
\BEST\LOU

ferocious · Apr 06, 2009 10:07 PM

#2 source
Your best bet is to cut ribs, either lite ply or 3/32 laminated(3 layers)balsa, for each end of the gear block to lock into. It won't show through the balsa and will tie the block into both the top and bottom skins.
Phil C