Thanks for the info! That is what I figured with the weight of the plane 3D would be limited and a larger engine would be helpful. A flying buddy has a Funtana with a O.S. 70 and it has plenty of power and it weighs more. I am wanting power and balance, I don't want to put it on the runway and have it tip over! I guess I am asking what can I put on it with plenty of power and not cause balance isssues.
Jamie