Motorcycle Engine
Built by Frank Paine in July 2001
A full-size model of a twin-cylinder, four-stroke motorcycle engine with overhead valve based loosely on the 1950s № 10 outfit Special Model Leaflet.
It is ‘cut away’ to show its operation and includes working valve gear, sparking plugs, and most other details.
Many modifications have been made to the original design, including to the connecting rods, valve gear, flywheel, timing gear and cooling fins in the interests of realism, and the model can be operated by push-button to rotate using a PDU. As a demonstration model of the workings of the four-stroke cycle it is quite effective and educational.