Hollow Molded wings...how are they made?? - RC Groups
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Feb 12, 2004, 06:44 AM
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Hollow Molded wings...how are they made??


I have a Enigma...it has hollow wings...how is this done??...the edges are so sharp and straight, it is amazing....
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Feb 12, 2004, 12:03 PM
Registered User
Dear CD,

From what I understand, the glass/balsa/glass/carbon-spar-cap-and-leading-and-trailing-edges wet (with epoxy resin) layup is put into a precise female mold, then either vacuum-bagged or pressed together with a matching male mold, and allowed to cure. This makes one half. The two halves and glass/balsa/glass laminated spar and root rib are then jigged together and glued along the edges, like a molded plastic model, forming the finished wing.

Some of that is conjecture, but I think it's more or less correct.

Marc
Feb 12, 2004, 12:35 PM
RCGroups Author
SoarNeck's Avatar
That's about right, but I don't think many are done with a matching male mold. You'd never be able to play with different thicknesses of skin/layup, or at the minimum you'd need a bunch of male forms. Some use foam bagged into the female mold (Prodij, new Encore etc), but it's not quite the same.

For exact details of F5B models, wander over to the High Performance electric forum.
Feb 13, 2004, 04:17 PM
Registered User
jofo1's Avatar
there is a great thread illustrating the entire process in the High Performance Forum of Ezone, it is an F5B project.