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A driving factor behind the BSA/Triumph change was that Lucas [1] had declared an intention to abandon production of motorcycle dynamos and magnetos, and instead produce only alternators. By contrast, Velocette, Matchless/AJS, and Norton motorcycles continued to be pre-unit construction (the former machines with pressed-steel primary cases ...
AJS racing motorcycle showing typical pre-unit construction engine and gearbox layout with mounting plates, slotted holes and screw-thread adjusters visible. Pre-unit construction, [1] also called separate construction, is a motorcycle engine architecture where the engine and gearbox are separate components with their own oil reservoirs, linked by a driving chain within a primary chaincase.
BSA acquired the Triumph marque in 1951, and the BSA C15 250 cc four stroke was derived from the 200 cc Triumph Tiger Cub, itself coming from the 150cc Terrier. Edward Turner became head of the BSA automotive division and in 1958 BSA introduced the concept of unit construction, where the engine and gearbox were combined in one piece rather than as separate components.
The BSA B44 Shooting Star was a motorcycle made by BSA at their factory in Small Heath, Birmingham. Similar to the BSA C15 and sharing many of the same parts, the B44 had an uprated chassis. [ 3 ] A weak point of the BSA 250 and most 350 unit singles were the big end bearing and timing side crank bush.
It is the perhaps best-known and most infamous product of the British three-wheeled car industry that was very successful from the 1950s until the 1980s; mainly due to British tax loopholes that allowed three-wheeled cars to be taxed as motorcycles and be driven with a motorcycle license. The Robin enjoyed sales success throughout its lifetime ...
The concept of keeping a motorcycle in at least minimally operational condition without consideration for appearance has probably characterized motorcycle ownership since its earliest days. [2] The essence of a rat bike is keeping a motorbike on the road for the maximum amount of time while spending as little as possible on it. [ 3 ]
The Rocket 3/Trident was part of Triumph's plan to extend the model range beyond their 650 cc parallel twins. It was the last major motorcycle developed by Triumph at Meriden, West Midlands, created to meet the demands of the US market. Although BSA experienced serious financial difficulties, 27,480 Rocket 3/Tridents were produced during its ...
The Triumph Bonneville T140 is a standard motorcycle with a 750 cc (46 cu in) capacity engine that was designed and built by Triumph Engineering at Meriden near Coventry.. The T140 was a continuation of the second generation in the Bonneville series developed from the earlier 650 cc (40 cu in) T120 Bonneville and was produced by Triumph in a number of versions, including limited editions, from ...