Armstrong Siddeley Panther

The Armstrong Siddeley Panther was a 27-litre 14-cylinder twin-row air-cooled radial aero engine developed by Armstrong Siddeley. It was originally named the Jaguar Major.[1]

Panther/Jaguar Major
Type Radial engine
National origin United Kingdom
Manufacturer Armstrong Siddeley
First run 1929
Major applications Fairey Gordon


Specifications (Panther VII)

Data from [2]

General characteristics

  • Type: 14-cylinder twin-row air-cooled radial engine
  • Bore: 5.25 in (133.4 mm)
  • Stroke: 5.5 in (139.7 mm)
  • Displacement: 1,667 cu in (27.3 L)
  • Length: 64 in (1.63 m)
  • Diameter: 46.45 in (1.18 m)
  • Dry weight: 1,047 lb (475 kg)



See also

Related development

Related lists



  1. Lumsden 2003, p.72.
  2. Lumsden 2003, p.73.


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