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. Engine data: 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. Further information can be found at Stirling Engines Study Group web site http://members.aol.com/bkammerich/stirle.htm (in German and English).