Any aspiring mechanic or engine enthusiast would love this demonstration model. Designed after a typical air cooled engine, the operation of the valves in this engine is clearly evident with the cams being driven by a gear train from the rear of the main crank.

A simulated spark plug uses a small lamp to indicate the firing point and a cross section of the carburetor is shown. Mounted on a base, the engine provides screw terminals for connection to a 3V battery.

Size: 21 x 21 x 37 cm.