My twelve-year old second cousin built one and put a TT 46 in it. I flew it and thought it was "acceptable" at our 1500 ft. elevation field. I built one and have a K&B Twist Head 61 in it, and it is even "more acceptable". This particular 61 doesn't weigh a whole lot more than a 46 but has more basic power. I did not put the rudder servo in the tail. The plane builds light and flies well in a pattern type mode (no 3D for me).

Hope you enjoy it!

Clair