de Havilland Gipsy Six

Gipsy Six
Preserved Gipsy Six
TypePiston inline aero engine
Manufacturerde Havilland Engine Company
First run1935
Major applicationsde Havilland Dragon Rapide
Number built1,139
Developed fromde Havilland Gipsy Major
Developed intode Havilland Gipsy Queen

The de Havilland Gipsy Six is a British six-cylinder, air-cooled, inverted inline piston engine developed by the de Havilland Engine Company for aircraft use in the 1930s. It was based on the cylinders of the four-cylinder Gipsy Major and was developed into a series of similar aero engines which were still in common use until the 1980s.

The engines were of particular note for their exceptionally low cross-sectional area, a drag-reducing feature which made them ideal for the many racing aircraft of that period. In 1934, the basic bronze-headed Gipsy Six, rated at 185 horsepower (138 kW) at 2,100 rpm was modified for use in the DH.88 Comet air racer as the Gipsy Six "R" which produced 223 horsepower (166 kW) at 2,400 rpm for takeoff. Many Gipsy Six engines remain in service powering vintage aircraft types today.

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