My toc/Am yak 30% - flying with a ZDZ50ng and a pitts muffler and Bolly 22x8 prop - TBM li ions 2800ma x 2 regulated to 6v - Hitec servos 5945mg all round and a 5955 for the rudder - a real floater and one of the best 50cc planes to date. i have now recovered it and changed the engine to a Mvvs 58.