This tiny internal combustion engine has a single cylinder.
The engine has a large brass flywheel and a small aluminum pulley for running accessories.
Bottom of the the screen: crankshaft. Top: piston.
Ignition is provided by a tiny working spark plug.
This basic carburetor controls the fuel air mixture.
The engine can run on butane, propane or a mixture.
The charge for the spark plug comes from this piezo igniter.
Open the gas valve, spin the flywheel and the engine roars to life-- occasionally spitting blue flames from the dual exhaust pipes.