Rider Ericsson Hot Air pumping Engine Model R01A

This is a mini Stirling model, with a length of 125MM, a width of 75MM, a height of 128MM, and a weight of 900G. It is assembled from many fine small parts. A cast brass flywheel is used on the main shaft, and the mounting base plate is made of solid wood
It uses gas as fuel. Its combustion chamber is equipped with a mini stove head and a furnace door designed for ignition. It uses water circulation cooling, and there is a mini water pump installed on the body. The water pipe is connected to a brass water tank
Perhaps this is the world's smallest Rider Ericsson Hot Air pumping Engine Model.
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