Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

This is a mini version of Knucklehead Engine. It is reduced in a ratio of 1: 5, and the details of each part are truly restored.
The engine is 120mm long, 80mm wide, 110mm high. 1100g. The displacement is 4.2ml, the cycle diameter is 13mm, and the itinerary is 16mm.
Use fuel as gasoline. The ignition device uses 3 1.5V small batteries (4.5V) to supply power.
This is a fairly complicated model that uses aluminum alloy, brass and stainless steel CNC processing and manufacturing.
https://www.ebay.co.uk/itm/374270511429
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