The Napier Cub was an unusual and very large experimental 1,000 horsepower (750 kW) 16-cylinder 'X' pattern liquid-cooled aero engine built by the British engine company D. Napier & Son.

First flown on 15 December 1922 in an Avro Aldershot biplane bomber aircraft, the only other application was in the Blackburn Cubaroo.

[1] The four banks of four cylinders were arranged in a flattened 'X' when viewed from the front.

The valve drive gear, magnetos and pumps were fitted to the rear of the crankcase.

Data from Lumsden[2] Comparable engines Related lists