J-3 Cub wont fly!!!
i bought a Great planes piper cub about a week ago. i took it outside to fly it and it banked to the right really hard. after fixing the motor mount i put my GWS 300 D on there to see if it would fly. well, it was REALLY squirrelly and wouldn't fly. so i thought it might be too big of a motor. so i put the stock 280 on. i had my mom drive me to the field and it seemed tail heavy even though the CG was dead on. it seemed like it didn't have enough thrust even with a 11.1V li-poly on it. whats wrong with this thing???