User:Buster40004/Sandbox/Projects/JAP V-twin Aircraft Engines

J A Prestwich Limited (JAP) produced a number of V-twin motorcycle engines that were adapted to early British aircraft types. Among those engines are the 1906 6hp and 9hp V-Twins.

Early aircraft were light and basic, and needed a reliable and lightweight engine to power them and JAP motorcycle engines were ideal. J. A. Prestwich at first would purely deliver the same engine to the aircraft manufacturer, allowing them to make local modifications - mainly larger venturi tubes for the carburettor, to allow for greater air intake at altitude.

Engine: 9hp JAP water cooled ohv V-twin Bore x stroke: 85.7 x 95mm Capacity: 1096cc Power output: 10hp