Scratch build o' me own design I call "Triple A" because I designed it t' eat up A8-3 engines from t' Estes Blast Off Flight Pack three at a time. This was its first launch; no damage upon recovery despite a rapid descent. Well, blow me down! Some charrin' o' t' joints betwixt fins/body tube right at t' bottom o' t' body tube. Begad! No problem. Begad! Ignition be with Quest Q2G2 ignitors and a modified Estes controller. I'll have t' try it on some B6 engines next...