The Hirth HM 506 was a six-cylinder air-cooled inverted inline engine that was developed from the earlier four-cylinder HM 504. The HM 506 was a popular engine for light aircraft of the 1930s to 1940s and powered the Bücker Bü 133A model trainer. The engine featured a cast magnesium alloy crankcase.
Applications Bücker Bü 133 A Fieseler Fi 99 Fieseler Fi 157 (UAV prototype) Fieseler Fi 158 (UAV prototype) Gotha Go 241 Klemm Kl 35 B (D-ERLQ)
Specifications (HM 506A)
References
External links Göbler-Hirthmotoren Company website no historical section no access - for sale of Hirth Flugmotoren manuals