|ADC Airdisco installed in a DH.51.|
|Type||Air-cooled V-8 piston engine|
|National origin||United Kingdom|
|Manufacturer||Aircraft Disposal Company|
|Major applications||de Havilland DH.51
|Developed into||ADC Cirrus|
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.
Data from Lumsden 
- 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
- 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
- Power output: 120 hp ( kW) at 1,800 rpm (takeoff power)
- Compression ratio: 4.6:1
- Related development
- Related lists
- Lumsden 2003, p. 55.
- Shuttleworth Collection - DH.51 Retrieved: 1 September 2009
- Lumsden 2003, p.276.
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