Thanks for your reply David. I agree that the 40 is an excellent match for that plane as I have trained on it all last year.

What I am looking for is more performance so I can start getting into aerobatics. Therefore I was just looking for more speed and power. I realize that OS makes a great engine, in fact I have nothing but including the 40LA, 61FX, and 50SX ringed for my Raptor. However I can get the ST G-51 for almost half the price of the OS 50 ringed. Do you think the it would over power the plane? I do have a Sig Hog Bipe in the hangar that is built but I haven't flown yet, with the 61 on it when I get into some real 3D.

Dion