A small power Stirling engine is being developed in Germany to a design by D. Viebach, who developed an engine with a shaft power of 500 Watt.
Stroke: 75 mm
Diameter working piston: 80 mm
Diameter Displacer: 96 mm
Regenerator-mass: ca. 150 g
Heat-Exchanger: l: 250 mm; di: 5 mm, da: 7 mm
The Viebach engine is available as a set of castings or as a running engine.