RE: Fly gas in a 60 sized airframe
Fastrat, I hope that JettPilot was just kidding. The Evolution 26cc is way to large and heavy for most 60 sized planes. As an example, the RCS 1.40 is both smaller and lighter, I believe, than the "Evolution" 26cc MVVS Gas engine that Horizon is now importing. And the RCS is already physically too big and heavy for a .60 sized plane. People have used the RCS in 90-120 sized planes, but a 60-size plane is really gonna be heavy, even if you can manage to fit it in place.
Yes, it is also possible to convert a glow engine to gas. Typically, however, glow engines are not designed with needle bearings. They do not have carbs where the fuel needle size settings that are optimized for gas. The plain bearings will cause you to have to run high oil content, similar to nitro fuels so it will still be messy. You might need a fuel pump regulator as well if you use a glow style carb in a conversion. Also gas engines burn approx 1/3 the amount of fuel for a given engine displacement compared to the same engine running glow fuel. This means that you will have to use smaller orifices for gas, ie, change the carb/needle to work better with it.