Tu meni nešto ne špila. Koliko ja znam JAP je radio kompletne motore samo kratko od 1904 do 1908 a ostalo su radili samo masine koje su ugradjivali drugi proizvodjaci. Prilazem kratku povijest na engleskom:
Brief History of the Marque: JAP
J.A.Prestwich was responsible for the design and manufacture of engines used in a great many famous marques and had numerous racing successes. JAP engines were still used in speedway bikes well into the 1960's. Complete motorcycles were built from 1904 to 1908, and subsequently the factory concentrated on supplying its proprietory engines to other manufacturers. After 1945, production was taken over by the Villiers factory.
The extensive list of manufacturers which used JAP engines includes Acme, AJW, Aliprandi, Alldays & Onions, Ambassador, Argentre, Ariel, Atala, Austral, Automoto, AWD, Bown, Bücker, Brough-Superior, Brown, Calthorpe, Chater-Lea, Corah, Cotton, Coventry-Eagle, De-De, DMW, Dollar, Dunelt, Eysink, Favor, Fusi, Ganna, Grindlay-Peerless, Hagon, Hazelwood, Imperia, Invicta, La Mondiale, Lady, Le Grimpeur, Lea-Francis, Majestic, Matchless, Meray, MGC, Morgan, New Imperial, New Map, Nut, OEC, OK-Supreme, Onoto, Osa-Liberty, Radior, Rex-Acme, Rover, Rovin, Royal Enfield, Royal Ruby, San Sou Pap, Soyer, Sparkbrook, Stylson, Terrot, Tornax, Trump, Ultima, UT, Verlor, Vindec, Wolf, York and Zenith.
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