Geoffrey Goodchild



Jan Ridders’ version of the Otto four-stroke engine is a popular design, and great project for a small home workshop. Geoffrey Goodchild displayed his ‘just for fun’ version at the last Model Engineer Exhibition. Details of the design and how to obtain up-to date drawings have been published on MEWS and can be found here, and the latest ignition system here.

Jan wrote of this design that there would be “no difficult fabrication techniques like casting, molding, accurate grinding,  cog- or chain wheels, etc. It must be possible for every ‘moderate’ model builder like me to make this engine with simple standard lathe and milling work and from standard bar stock materials.

“So, my goal was to design and make a honest, reliable, nice and quiet running  4-stroke internal combustion engine, rather than a complex and high power machine.” -

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