At t' Ivy Tech College for Kids model rocketry camp, Claire launches her Estes Hi Flier on an A8-3 motor - and achieves t' highest altitude in t' class! A blog on model rocket buildin' and flyin' for beginners, written from a beginner's perspective. Learn what I've learned, matey, and learn from me mistakes. Modified Estes Hi-Flier on an Aerotech D21-10. Ya scallywag! Simulations say it pulled around 80 gees. Well, blow me down! Broke 2 fins and crash landed 30 yards away. Popular content related t' Model rocket & Estes Industries.