Hirth HM 508 explained

The Hirth HM 508 was an air-cooled, eight-cylinder, 60° cylinder bank angle inverted-V aircraft engine built in Germany in the 1930s.^[1] It had a bore and stroke of 105 mm × 115 mm (4.1 in × 4.5 in) and developed 210 kW (280 hp) at 3,000 rpm.

Variants

HM 8U:

HM 508A:

HM 508B:

HM 508C: ^[2]

HM 508D: at 3000 rpm

HM 508E:

HM 508F:

HM 508G:

HM 508H:, low fuel consumption variant, with centrifugal supercharger geared at 3.86:1 crankshaft speed for long-range record breaking aircraft.

Applications

• Ambrosini S.7
• Gotha Go 146
• Gotha Go 149
• Heinkel He 116
• IMAM Ro.63
• Messerschmitt Bf 108
• Siebel Fh 104
• Weserflug We 271 Experimental aircraft

Notes and References

1. Book: Gunston . Bill . World encyclopaedia of aero engines . 1989 . P. Stephens . London . 1-85260-163-9 . 77 . Fully rev. 2nd.
2. Book: Schneider, Helmut (Dipl.Ing.) . Flugzeug-Typenbuch. Handbuch der deutschen Luftfahrt- und Zubehör-Industrie 1944 . 1944 . Herm. Beyer Verlag . Leipzig . 381120484X . Facsimile reprint 1986 . German . 398-399.