I agree with the other review, about this plane being for intermediate pilots.After reading other reviews I decieded to use a 3 cell. this airplanewas set up for speed.I am an ultimate fan. My favorite one I own is a precision aerobatic ultimate.After my first flight I decieded to look at motor speed controller.I weighted motor at 5,2 oz est wattage at over 400 with a 4 cell.What I decieded to do was exchange it with a 2212 motor speed controller weighting 2.8 oz.What a nice flying aerobatic plane I have now.I plan to use the motor that came with this plane on a 38 in wing span plane.