Dick,
I remember your piped ST 2300 setups. They made serious power, and were flip-and-fly simple to operate (once set up).

All, The purpose of this thread isn't to say that ignition on glow is CHEAPER than the gas engines in the long run, but that they are lighter and more powerful. Gasoline is cheaper and runs cleaner, those are moot points. You can have light, cheap to operate, or powerful. Pick any three.

No gas engine on the market will spin an APC 18x8 at 10k rpm and weigh as little as the ST 2300. The Syssa 180 may come close on a pipe.

I actually have a few engines I would like to convert to EI just to make them more reliable. They can run leaner too without preignition.