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Common to the rest of the BSA/Triumph range were the Ceriani type forks and conical wheel hubs. The hubs were 7" rear and either 6" sls or 8" tls front. [30] These models were only in production for a year. The financial situation of the BSA Group forced a great reduction in the model range for 1972 and the 250s were discontinued. [32]
1910 "New Pattern' James with hub-center steering Detail of mechanism on the Mead & Tomkinson Kawasaki 'Nessie' Steven Linsdell's Yamaha GTS Isle of Man TT racing motorcycle. The hub-center steer concept is a very old one used as early as 1910 by the British James Cycle Co, and in 1920 by Ner-a-Car, and enjoyed an aftermarket vogue in the 1970s ...
The Steffey motorcycle in 1902, essentially a bicycle with a two-stroke engine attached, used wooden, rims with wire spokes. [1] This style of wheel evolved into a stouter motorcycle-specific wheel, still with spokes, up to the 1960s and beyond. [2]: 134 In April, 1922, Borrani started production of motorcycle wheels with an aluminium rim. [3]
By the early 1900s, Wall noticed the rise in bicycles in the United Kingdom which was a market he wanted to tap into. [1] One of the earliest products of A. W. Wall Ltd launched at the Stanley Show in 1903, this unusually long and low motorcycle with a 3 hp engine had initially been used a Kelecom engine, [2] but also was used to promote the ROC epicyclic hub gearboxes and clutches produced by ...
All Sturmey-Archer gear hubs use epicyclic (planetary) geartrains of varying complexity. The AW is the simplest, using one set of planetary gears with four planets. The AM uses three compound planets with differently sized cogs machined from a common shaft to engage the gear ring and sun gear separately, while the close-ratio three-speeds, and hubs with four or more speeds, use multiple ...
Rudge Whitworth Cycles was a British bicycle, bicycle saddle, [1] motorcycle and sports car wheel manufacturer that resulted from the merger of two bicycle manufacturers in 1894, Whitworth Cycle Co. of Birmingham, founded by Charles Henry Pugh and his two sons Charles Vernon and John, [2] and Rudge Cycle Co. of Coventry (which descended from a ...
The wheel rims are usually steel or aluminum (generally with steel spokes and an aluminum hub) or mag-type cast or machined aluminum. Cast magnesium disks, produced by one-step hot forging from magnesium alloys ZK60 and MA-14, are also used for many motorcycle wheels.
In May 1920 a new British Excelsior lightweight model was announced, this being the first motorcycle to show the new Villiers engine using the flywheel-magneto instead of a separate magneto. [8] In September 1922 Villiers announced the details of their new 1923 engine range, [9] which included 147 cc, 250 cc and 343 cc engines. These engines ...
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