the engine with mounted on a polished oak base, with counterweight open crank, twin drilled disk flywheels, 1 with a pully the other with a governor acting on the con rod to disengage the exhaust valve (hit & miss) , with water cooled hopper, cylinder head with atmospheric inlet valve, spark plug, simple carburetor with fuel needle, brass fuel tank to the side, engine 1" bore, 2" stroke, base 36cm front to back