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ADC Airdisco

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Manufacturer  ADC Aircraft
ADC Airdisco httpsuploadwikimediaorgwikipediacommonsthu

The ADC Airdisco is a British V-8 aero engine that first ran in 1925.


Design and development

The 'Airdisco' was developed from the French Renault 70 hp aero engine by Frank Halford of the Aircraft Disposal Company, the main difference being the use of aluminium cylinder heads. Halford later used one bank of cylinders to create the Cirrus engine.


  • Avro 548A
  • Cierva Parnall Gyroplane
  • de Havilland DH.51
  • Royal Aircraft Factory S.E.5A
  • Survivors

    A de Havilland DH.51 owned and operated by the Shuttleworth Collection at Old Warden, Bedfordshire remains airworthy and is powered by an original ADC Airdisco engine.

    Specifications (Airdisco)

    Data from Lumsden

    General characteristics

  • Type: Inline air-cooled, upright, V-8 piston engine
  • Bore: 4.13 in (105 mm)
  • Stroke: 5.12 in (130 mm)
  • Displacement: 548.94 cu in (9 L)
  • Length: 46 in (1,168 mm)
  • Width: 21.3 in (541 mm)
  • Height: 31.1 in (790 mm)
  • Dry weight: lb ( kg)
  • Designer: Frank Halford
  • Components

  • Valvetrain: 1 inlet and 1 exhaust valve per cylinder
  • Fuel system: Carburettor
  • Fuel type: 74 octane
  • Cooling system: Air-cooled
  • Reduction gear: 0.5:1, right hand tractor
  • Performance

  • Power output: 120 hp ( kW) at 1,800 rpm (takeoff power)
  • Compression ratio: 4.6:1
  • References

    ADC Airdisco Wikipedia