I have one with a Ram 1000 for power. The powerplant produces roughly 28lbs of thrust and is enough to power this 50lb plane. The 339 has great handling characteristics, good presence in the air, and is a joy to fly. IMO, should you decide to purchase one, you will enjoy it. Also, for even better performance, some flyers are using the Jet Central Rhino. (My MB 339 is from Fei Bao)