The Robinson hot air engine was common in England. Patented in 1889, large quantites of them were produced as recently as the 1920s. Used in England and Europe until the WW-II era, they were displaced by electric motors and small but powerful internal combusion engines.
The Robinson's displacer moves vertically and the power piston moves horizontally. This 90' arrangement makes for a very compact size. In fact, the power piston connecting rod weaves its way through the displacer linkage.
Robinson Hot Water Stirling Engine _ JA830
Place this Robison Stirling Engine on a cup of hot water / hot coffee & it may needs some time to start. The time is depends on the heat source given & is generally within 30 seconds to 2 minutes…
The engine won’t start by itself, but given a little push in the proper direction (strong enough to coast the parts over for several cycles), the engine will take off and continue running on its own.
The engine is ONLY for hot water! Please DO NOT use fire directly, because the diaplacer is made of polyfoam and can not sustain high temperature.