My son has a Crazy Sparrow but the performance is very poor with the supplied 280 motor and 8 cell 150 mah pack. Can it be improved with a 300+ or 350+ motor/gearbox set? Does anyone have any suggestions?

Thanks!
Gary

THe crazey Sparrow has had problems with tip stalling .The wings need a little washout put ino them but this is hard to do on a foamie. Adding weight with a larger motor and batt pack will aggrivate this problem. THis is not a beginers plane by the way. Jim Finn