de Havilland Gipsy Queen
Description

The de Havilland Gipsy Queen is a British six-cylinder aero engine of 9 litres (550 cu in) capacity that was developed in 1936 by the de Havilland Engine Company. It was developed from the de Havilland Gipsy Six for military aircraft use. Produced between 1936 and 1950 Gipsy Queen engines still power vintage de Havilland aircraft types today.

General characteristics

  • Type: 6-cylinder inverted inline piston engine
  • Bore: 4.646 in (118 mm)
  • Stroke: 5.512 in (140 mm)
  • Displacement: 560.6 cu in (9.186 L)
  • Length: 63.5 in (1,587 mm)
  • Width: 20.5 in (513 mm)
  • Height: 33.5 in (838 mm)
  • Dry weight: 486 lbs (220 kg)

Performance

  • Power output: 208 hp (155 kW) at 2,400 rpm
  • Compression ratio: 6.5:1
  • Power-to-weight ratio: 0.43 hp/lb (0.7 kW/kg)

Components

  • Valvetrain: Overhead valve
  • Fuel type: 87 octane petrol
  • Oil system: Dry sump
  • Cooling system: Air-cooled