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The Navigator is a Norton motorcycle made from 1960 to 1965, based on the Norton Jubilee 250 cc. Production ceased shortly before the collapse of the parent group Associated Motor Cycles in 1966.〔 ==Development== Launched in 1960 at the Earls Court Motorcycle Show the Navigator was a development of the Norton Jubilee. The engine was enlarged in bore (from 60 to 63mm) and stroke (from 44 to 56mm), to give a capacity of 349cc. The cylinders, separate on the Jubilee, were now a single casting to improve oil retention, but the cylinder heads continued to be separate. Norton ''Roadholder'' forks and eight-inch brakes were fitted to replace the Jubilee's lightweight front end. The down tube on the frame was stiffened to improve handling and deal with the power increase to 22bhp.〔 The top speed was recorded at over , and the factory persuaded Harold Daniell, the Isle of Man TT racer who named the Norton Featherbed frame,〔(【引用サイトリンク】title=Harold Daniell )〕 to enter a standard Norton Navigator in a race at Silverstone race track where it recorded on the straight with only minor carburettor modification.〔 The 1960 model was still aimed at the Jubilee market, with heavy valanced mudguard and enclosed rear end. In 1961, optional extras included a handlebar-mounted fairing and screen, as well as large legshields and panniers, giving it the enclosed look popular at the time.〔 Early Navigators came with two-tone paintwork in grey and black for the "De Luxe" and grey and blue for the "Standard" model. From October 1962, the Standard's colour options were changed to black and polychromatic blue, with black seats with white piping. When Norton production moved to Plumstead in 1963, production of the De Luxe ended, but the Standard model continued with wider front forks and a steering lock, until Navigator production ended in 1965 with the collapse of Norton's parent group, Associated Motor Cycles.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Norton Navigator」の詳細全文を読む スポンサード リンク
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