Ya know, I wonder why everyone uses a pumped, regulated carb on these small, (under 20cc) gassers? They are obviously much heavier than a glow type carb. Power to weight is an obvious concern with these small gassers, so I think they could save weight by using a simpler carburetor. When these size engines are used as glow engines, everyone works within the constraint of fuel draw weakness with the glow fuel system, and places their fuel tank accordingly. All they would need to do to use a simple glow type carb would be to provide it with very fine thread needles, or longer lower taper needles so the carb wouldn't be so finicky to adjust on gasoline. Someone is likely to say that it wouldn't be safe to use muffler pressure, which might be true. However, crankcase pressure could easily and safely be used.

Seems like except for the ignition coil itself, the ignition system could be made a lot smaller and lighter too....

Funny though, how everything has come full circle, from the old ignition engines, to glow, and now back to ignition. You would think the glow fuel manufacturers would "see the light" and get glow fuel prices under control before they loose their market completely!

AV8TOR