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Microcosm T1


This is a miniature representation of the Aeolipile, described and probably invented by Hero of Alexandria in the 1st century AD (Wikipedia page). There are no contemporary pictures of the original, just a vague description; but it is usually shown as something like the bottom image on the left.

It is a reaction turbine, with no blades but three steam jets exhausting into the atmosphere. The roughly spherical boiler, 40mm diameter spins with the jets and is heated by a meths burner. It is supported by a needle bearing at the bottom and a miniature ball bearing at the top.

Make Microcosm
Model T1
Made 2018
Description Aeolipile turbine
Cylinders 0
Cylinder Type
Bore mm
Stroke mm
Valve Type
Boiler Type Spherical
Boiler Diam mm 40
Boiler length/height mm 40
Fuel Meths
Mechanical Condition Good
Cosmetic Condition Good
Paintwork N/A
Purchased 27/7/2018
Purchase cost 11.50
Additional spend