ORIGINAL: electron

I have one as well great little flying plane... I am running a OS FX 25 on mine now.. I started with a OX 46 FX WAY TO MUCH Weight made the plane heavy and landings fast... When I went to the FX 25 it is the perfect power... Smooth Cuban eights not a problem... Out side loops... You name it... Reminds me a small Kaos..

My suggestion use a FX 25 on this plane... It is the perfect combo. Plently of power and makes the plane light... Look at the specs on the FX 25

25 FX (OSMG0525) CU 0.249 0.710 0.630 RPM 2,500-18,000 BHP 0.84 @ 18,000 8.8 oz

You go with a 40 or 46 you end up adding a 6-10oz to the plane... Yep and a half pound makes your engine size gain not such a gain....

It's an airplane and lighter is always better...