Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

When I could see well enough, I used to build and fly RC planes. I ran anything from .049 to six hp converted chainsaw engines.  My all time favorite was a .46 Enya four stroke with a home brew belt drive supercharger.  I ran it as prescribed on glow fuel, but always wished I’d converted it to battery spark ignition. A friend had an OS flat four with his homespun distributor and battery ignition.  It always started with a single flip, owing to the mechanical spark advance he had made, and idled at about 300 rpm’s.