i have personally had ywo of these planes.. my club has had 5 different fliers with these planes..we have flown them with everything fron a .76 gms to a 1.20 glow and a 1.20 4 stroke the 1.20 are a over kill unless you want extreme flying.. around a .90 is perfect for the plane, it will tuck in the cowell since its a huge one ..and with that you will have unlimited verticle...i also put a 1.20 in the cap 60 sport it sounded great.. flew it only at half throttle....thats all it needed... it is truely 3d and will do all you want it to do...its one of the best values for the money spent that there is..