""G38s have some great attributes, performance is not one of them.""

yes, the G38 is a bit heavy and low on power compared by today standard's,

I say a bit low on power because of prop/RPM comparisons with other newer designed 35cc and 40cc motors,,,

I have a MVVS 35cc gasser and the G38,, my MVVS will turn a Zinger 20x8 at 7500 (tuned for flight) (7690 peaked out) a G38 wont pull that,,,

but being a Zenoah I'm sure its a very well made motor !! so is the MVVS..

Jim