JA Prestwich Industries, was an English engineering company named after founder John Alfred Prestwich, which produced cinematographic equipment, internal combustion engines (for which the company was generally abbreviated to "J.A.P."), and other examples of precision engineering.

From 1904 to 1908 complete motorcycles were produced from the development of the first overhead valve motorcycle engine to be produced in the UK.

After that the factory concentrated on supplying its engines to other manufacturers, including Brough Superior, Triumph Motorcycles, A. J. Stevens & Co. Ltd, Enfield Cycle Co, Hazlewoods Limited, Zenith Motorcycles, and HRD Motorcycles, the forerunner of Vincent Motorcycles. Machines that incorporated its engines included the AJS Model D, fabricated for the Russians in the First World War.

JAP exported significant numbers of engines to foreign motorcycle manufacturers including Dresch and Terrot in France, and Ardie, Hecker and Tornax in Germany.

Latterly, JAP engines (under Villiers control) were used in motorcycle racing, and most commonly speedway or dirt track.

Posted by brizzle born and bred on 2015-02-15 18:18:07

Tagged: , Classic British Motorcycles – JAP , dirt-track-bike , JAP , JA Prestwich Industries , John Alfred Prestwich

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