- Mar 23, 2011
- Reaction score
I know that in AeroTech kits, the rockets are constructed primarily with CA, and the fins are also glued to the "interlock" rings on the motor tube. The CA used in fin construction works very well with the much added strength of the interlock rings. But this is only in AeroTech kits. I plan on using some old AT fins that I had in a rocket that is constructed mainly of phenolic, cardboard, and plywood. Normally in such a rocket you would have plywood or fiberglass fins, and the rocket would be assembled with epoxy. But here is the problem: CA is the only adhesive that I know to work with plastic and cardboard/phenolic, and therefore it's the only thing I know to use in gluing these fins on. But although CA works very well, and is very strong, when it's used in fin attachment on a bird that doesn't have the AT fin attachment parts, and one that's intended to use low range HPR motors (mainly H's), I don't think that it is strong enough by itself...on AT kits the interlock tabs help tremendously, and to add, they fly mainly on midpower motors. But this is HPR with no AT parts. Any stronger adhesive reccomendations? I have tried epoxy, and it doesn't work that well, as epoxy really isn't formulated to adhere to plastics. With just a little strength, I could pop the fins off the rocket I tried that with...I'm just glad they held on for the flight. Any reccomendations??