Armstrong Siddeley Genet Major


The Armstrong Siddeley Genet Major is a British five-cylinder, air-cooled, radial engine for aircraft, designed and built by Armstrong Siddeley and first run in 1928. It developed 140 horsepower. In Royal Air Force use the seven-cylinder version was known as the Civet I. The Feliform names used are in line with company convention, the Genet and Civet both being large cat-like carnivores.

Variants and applications

Genet Major I

The Genet Major 1 was a five-cylinder engine of that was closely related to the Genet I but with increased bore and stroke.
The Genet Major 1A was a seven-cylinder development of the Genet Major I, nominally rated at.
As Genet Major IA but with cylinders using cast rocker boxes.

Genet Major IV

A geared propeller drive version of the Genet Major IA,.
An Armstrong Siddeley Genet Major powers Southern Martlet which is owned and operated by the Shuttleworth Collection at Old Warden and flies at home air displays throughout the summer months.

Engines on display