Hi Wade, Thanks again for the help with the Avitar.

The 16x6 might not be the optimum prop. Having no experience with the thing, i just looked at the manual, the biggest they recommended was the 17x6, so i just grabbed the 16x6. Once i get it mounted up to a plane, i'll experiment. I use a digital fish gage and measure static thrust, trying to optimize thrust and still have good throtle responce. For most of the smaller engines i've played with they do tend to come out on the large diameter side. 11x4 on a piped 36, and 12.25x3.75 on piped 47.... Both gained over 1000 RPM and behave far better at half throtle than they did with regular mufflers.

I agree that my saitos usually behave very consistently at half throttle, (so long as they stay running ) my point is that two strokes can have that too. it just takes a bit more tweaking. I admit i have limited experience, but so far a well tunned Mousse can looks like the great equalizer.

With typed words i probably can not convince you, but since Mr Smith resides here in Sunny Tucson, i just might be able to convince him, that 2 strokes are in fact a perfectly legitamate means of nitromethane consumption.