ORIGINAL: oldvet70
I also have several Evolution 46's and they are not even close in power to an OS 65LA. They won't swing as big a prop as the 65 nor can they swing that bigger prop as fast as the LA.
My experience does not bear that out. I'll stack an Evolution 46 against an OS 65LA anyday in terms of performance... not that I dislike the LA's either, they are very reliable....
ORIGINAL: oldvet70
The OP appears to be looking for an economical Engine to fly a trainer. So unless he is building something other than a 40 size trainer all he needs is a OS 46LA. It is inexpensive, simple to use, will outlast his trainer unless it is destroyed in a crash and if it is he is not out as much money and can start again since he saved money on this first engine.
Yes the 46LA sounds like it would be fine for him... he was asking for a comparison though.