Harman Patil (Editor)

Hirth HM 504

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Hirth HM 504

The Hirth HM 504 is a four-cylinder air-cooled inverted inline engine. The 504 was a popular engine for light aircraft of the 1930s-1940s and it was used to power a number of Germany's trainer aircraft of World War II. The engine featured a cast magnesium alloy crankcase. The Hitachi Hatsukaze Model 11 was a Japanese licensed version.

Contents

Applications

  • Bücker Bü 131
  • Bücker Bü 181
  • BŻ-1 GIL (helicopter)
  • Klemm Kl 35
  • Matra-Cantinieau MC-101 (helicopter)
  • Morane-Saulnier MS.603
  • Payen Arbalète
  • Repülőgépgyár Levente II

    • Specifications (HM 504 A-2)

    Data from Katz.

    General characteristics

  • Type: 4-cylinder air-cooled inverted inline
  • Bore: 105 mm
  • Stroke: 115 mm
  • Displacement: 3,998 cm3
  • Length: 945 mm
  • Width: 520 mm
  • Height: 780 mm
  • Dry weight: 107 kg

    • Components

  • Valvetrain: 1 inlet and 1 exhaust valve per cylinder
  • Cooling system: air

    • Performance

  • Power output: 105 hp at 2,500 rpm
  • Compression ratio: 6.2:1
  • Fuel consumption: 228 g/PSh
  • Oil consumption: 1.5-3 g/PSh
  • Power-to-weight ratio: 2.87 lb/hp at cruise speed

    • References

    Hirth HM 504 Wikipedia
    (Text) CC BY-SA