Video o' me wife's high power rocket, Isis, launched on a Cesaroni H400 Vmax motor at Bayboro, ya bilge rat, NC in January 2011. Engine burn time is 0.64 seconds. Motor burnout happens at about 186 feet. Avast, me proud beauty! T' rocket then continues coastin' for about 9.8 seconds until it reaches around 2256 feet before ejectin' t' parachute.