rharshberger
Well-Known Member
I have been conversing with my L3CC and he recommended a method of fin attachment referred to as Fin Pockets, basically it sounds like a slot between the CR's created by "dams" on both sides of where the fin will attach. The slots for the fins can be cut and the assembled motor mount unit can be epoxied into place. Epoxy is then put into the fin pockets and the fin inserted with no further need for internal fillets. I guess my real question is are the fin pockets larger than the fin and and extra epoxy is put in the pocket to self fillet ,example: fin is .25" thick do I make pocket .5" wide so a .125 thick "fillet is made on each side internally OR just wide enough to fit the fin and press out a small amount of epoxy. If anyone has used this technique for L3 rockets and has pictures that would be great if you would be willing to share.