Had a H9 edge with a BME 50 on it. Had tremendous power..too much for the plane). The plane was otherwise pretty stock. It wanted to stall on tight turns, etc. You can't fly full blast all the time and have fun with this plane or this engine. Also, have a BME 50 in a H9 120 Cap. Doesn't stall like the Edge but after considering weight, etc., I believe it's way too much engine for these planes. Would recommend getting up into the 80 inch sizes.