RE: .46 engine
I have 2 OS 46AX. They both run great. And I am very happy with them. Lots of power. I am told that with the bearing style in the AX they have more power than the LA counter part. A bit more expensive.
I am told that the SuperTigre GS-45 ABC is a good cheap alternative to the OS46AX.
LOL, with my Kadet I use a 46ax and sometimes I get worried that my wing will rip off going into a hard bank at full throttle [X(] but all is still well. I am actually so worried about this that I am going to convert to a wing bolt down design rather than the existing rubber bands.
HOWEVER!! Hind sight is ALWAYS 20/20. Knowing now, I would have rather gotten something in the 50 range like the SuperTigre G-51 as now I would rather have more power and use throttle management a bit more. Food for thought...