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de Havilland Gipsy Major 1

1934, -, Not currently on display

Designed by Brooklands racing driver Frank Halford and built by the de Havilland Aircraft Company, this well-known aero-engine design was developed from the Gipsy III. Unlike earlier Gipsy engines, the Major is inverted: having the crankshaft at the bottom gives a better ground clearance for the propeller and a better view for the pilot. The Gipsy Major is best known for powering De Havilland’s pre-war Tiger Moth biplane and post-war Chipmunk trainers.

This particular engine has an unknown history but was probably fitted to a Chipmunk before being retired and transferred to Southall Technical College and professionally sectioned for training purposes as a typical light aircraft powerplant.

Donated by Ealing Tertiary College


Type: Air-cooled inline

Cylinders: 4

Power: 130bhp (97 kW)

Size: 373 in3 (6.1 L)

Bore: 4.6 in (118 mm)

Stroke: 5.5 in (140 mm)