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Original Text (Annotation: EAW048437 / 1393229)
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1950 Norton ES2 motorcycle.
The ES2 is a Norton motorcycle first produced in 1927. It was a long stroke single, always 79mm x 100mm bore and stroke, originally launched as a sports motorcycle but throughout its long life it was gradually overtaken by more powerful models.
It remained popular due to its reliability and ease of maintenance, as well as the traditional design. From 1947 the ES2 had an innovative hydraulically damped telescopic front fork and race developed rear plunger suspension.
From 1953 it had a single downtube swinging-arm frame and was uprated to the Rex McCandless Featherbed frame in 1959, featuring an improved AMC gearbox, revised cylinder head, crankshaft-mounted Lucas RM15 60-watt alternator with coil ignition and an 8-inch front brake with full width hubs. The wideline Featherbed-framed bike was road tested by The Motor Cycle June 4, 1959 and found to have a mean top speed of 82 mph and with petrol consumption of 56 mpg at 60 mph. '