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The Norton Manx or Manx Norton is a British racing motorcycle that was made from 1947 to 1962 by Norton Motors Ltd.Norton had contested every Isle of Man TT race from the inaugural 1907 event through into the 1970s, a feat unrivalled by any other manufacturer, and the development and honing of the Manx racing motorcycle was another step in this racing achievement.
The 1946 to 1953 Long Stroke Manx Norton was 79.6 mm × 100 mm (3.1 in × 3.9 in) initially SOHC, the DOHC engine becoming available to favoured racers in 1949. The Short Stroke model (1953 to 1962) had bore and stroke of 86 mm × 85.6 mm (3.4 in × 3.4 in).
Between 1931 and 1937 Norton had six Senior-TT wins with the long-stroke CamShaft One (CS1) engine. Norton entered the 1938 Senior TT with a new short-stroke engine, new telescopic front forks, and won for the 7th time, with rider Harold Daniell. [2]
The slow but immensely likeable Featherbed-framed 350 Model 50 and 500 ES2 Norton ohv singles were dropped and in their place appeared the Model 50 MkII and ES2 MkII, or, with Norton badges hastily tacked on the side, the Matchless G3 and G80. They failed to fool anyone, let alone the buying public.
Leslie Archer, best known as Les Archer Jr. (27 February 1929 – 18 December 2019), was an English former leading motorcycle racer of the 1950s, competing in long-distance speed trials, road racing and scrambles, now known as motocross. [3] He was the son of Les Archer, also a top motorcycle racer from the 1920s. [3]
Pre-1962 specification Manx Norton. After a short time at BSA where he worked on the 250cc single-cylinder racer with BSA chief designer Bert Hopwood he returned to Norton to continue development of the "Manx" and it is his 1961 version that is the most sought after by collectors today. [citation needed] [2] [dead link ]
Norton's competitors were offering 650 cc machines so the engine was again enlarged.to 89mm. with an all New crankcases were required for the longer stroke along with a new crankshaft that had larger crankpins and a wider flywheel, all-new cylinder barrels and pistons with short skirts and a;; new downdraft cylinder head for twin carbuerettors ...
Theo Louwes on Norton Manx. The term Classic Racing in the United Kingdom is generally accepted as motorcycle racing as defined under the rules and or auspices of the Classic Racing Motorcycle Club (CRMC). This was established in 1981 and mostly caters for solos and sidecars manufactured in the period 1945–1972.