My first built engine.
Four-stroke Gas-engine High-tention ignition.
My very first built engine,inspired by a Crossley gas engine, seen on the island where I live.
The engine has high tension ignition,the fuel is lighter-gas, bore and stroke: 20-42mm.
Four-stroke Gas-engine Hot-tube ignition.
My second built engine was an inverted hot-tube gas engine , with a fly-ball governor controlled "hit and miss" system. The system keep the exhaust valve open at a certain speed, by mean of a leaver connected to the exhaust valve rocker-arm, that hit a part of the fly-ball governor when it is open.
The fuel is lighter-gas and the bore-stroke 20-24 mm.
Fly-ball governor controlled hit and miss system. Hot-tube and gas burner.