I flew me Wildman Darkstar Jr. Aye aye! on a Purple Flash-powered I520 EX motor. Ran at about 1300 psi and burned in only 0.7 seconds. Well, blow me down! This was in a Loki Research 38/480 case usin' t' #22 nozzle. Begad! Flew up t' about 3700 feet.