Thread: Cool F3s
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Old Nov 22, 2012, 05:08 AM
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Needs to do 52 legs !!
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Verenigd Koninkrijk, Fareham
Joined Aug 2008
7,290 Posts
Hey guys, love that wave spar picture. Seen Jaro Muller do that before.

Regarding foam core and wave spar combination, I guess you would have trouble cutting the foam and hitting the carbon with the hot wire.

Perhaps better would be to make a set of cheap moulds by using the foam off cuts rather then the core. Laminate a thin sheet of premade composite to the off cuts. I've seen Stumax do it that way with great results. Same for the 3de mould half with the wave form, however this time you just lay up some thin glass on it and fill, sand, PVA as the finish is not important on this part. Then build the wing hollow as in the picture. No need for a CNC machine and just a single set of good cores (get them done by a pro).

Just an idea.
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