de Havilland Gipsy Twelve

The de Havilland Gipsy Twelve was a British aero engine developed by the de Havilland Engine Company in 1937. Approximately 95 were manufactured. It was known as the Gipsy King in Royal Air Force service.

Gipsy Twelve/Gipsy King
de Havilland Gipsy Twelve at the Science Museum (London)
Type Piston V-12 inline aero-engine
Manufacturer de Havilland Engine Company
First run 1937
Major applications de Havilland Don
de Havilland Albatross
Number built 95


Engines on display

Preserved de Havilland Gipsy Twelve engines are on public display at the following museums:

Specifications (Gipsy King I)

Data from Lumsden[1]

General characteristics

  • Type: Inverted 60 degree V-12 inline piston engine
  • Bore: 4.646 in (118 mm)
  • Stroke: 5.512 in (140 mm)
  • Displacement: 1121.3 cu in (18.3 L)
  • Length: 82.6 in (2,098 mm)
  • Width: 31.5 in (800 mm)
  • Height: 37.4 in (950 mm)
  • Dry weight: 1,058 lb (480 kg)



See also

Comparable engines

Related lists



  1. Lumsden 2003, p.147


  • Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. ISBN 1-85310-294-6.
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