seanychen,

I was hoping you would get some good responses to this question. Nobody has responded yet so I'll chime in and tell you why I just purchased an MVVS .91

1) The price is right. I ordered mine from Just Engines in GB and after shipping charges, the price was $157 and change.

2) True ABC piston/cyl and not a ringed motor.

3) Is not considered a "long stroke" motor therefore should like to rev higher than other .91s.

I haven't run mine yet so I cannot give you any figures or even impressions as to how this motor runs but I am willing to bet $1 that it is at least as powerful, if not more so, than the OS .91 FX.

I could be wrong but because it is a short stroke, I think 15 and 16 inch props would be a bit much. I will stay below 14" dia with mine. In fact, I intend to put it on a racer so I'll put a 12" or even an 11" prop on it and really let it spin.

Jaka, can you respond and give us your thoughts on this motor?

Thanks!