Samiksha Jaiswal (Editor)

Hirth HM 506

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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.

Contents

Applications

  • Bücker Bü 133 A
  • Fieseler Fi 98 (prototype)
  • Fieseler Fi 99
  • Fieseler Fi 157 (UAV prototype)
  • Fieseler Fi 158 (UAV prototype)
  • Gotha Go 241
  • Klemm Kl 35 B (D-ERLQ)

    • Specifications (HM 506)

    Data from Grey 1972, p. 60d-61d

    General characteristics

  • Type: 6-cylinder air-cooled inverted inline
  • Bore: 105 mm (4.13 in)
  • Stroke: 115 mm (4.53 in)
  • Displacement: 5.976 L (364.7 cu in)
  • Length: 1,276 mm (49.8 in)
  • Width: 490 mm (19.1 in)
  • Height: 735 mm (28.66 in)
  • Dry weight: 149 kg (328 lbs)

    • Components

  • Valvetrain: 1 inlet and 1 exhaust valve per cylinder, operated by push-rods and rockers
  • Fuel system: 2 Sum down draught carburetters, automatic mixture control and suitable for inverted flight. Twin Bosch magnetos.
  • Oil system: Fresh oil, metered for each cylinder. Rockers in oil bath.
  • Cooling system: air

    • Performance

  • Power output: 160 hp
  • Compression ratio: 6:1

    • References

    Hirth HM 506 Wikipedia
    (Text) CC BY-SA