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Lot 436: 1928 Norton 490cc CS1

Collectors' Motorcycles, Bonhams (16 October 2005)

Like the majority of their contemporaries, Norton relied on the sidevalve engine until the introduction of its first overhead-valve design in 1922, and the resulting Norton Model 18 was a big success on the road. On the racetrack however, Velocette had shown the way forward when its overhead-camshaft KTT romped away from the field in the 1926 Junior TT, and Norton responded with its own similar engine the following year. Designed by Walter Moore, the Norton motor retained the firmís traditional 79x100mm bore and stroke dimensions, employing bevel gears and a vertical shaft to drive the cams in KTT fashion. The cycle parts too were new, a cradle frame and saddle tank appearing for the first time on the works CS1 racer, which scored a debut win in the 1927 Isle of Man Senior TT with Alec Bennett riding. The production version of the new CS1 duly appeared at the Motor Cycle Show later that same year, and continued as Nortonís top-of-the-range sports machine until the introduction of the International. Today this rare landmark model is one of the most sought after of all Norton motorcycles.

When last sold, this CS1 came with another (dismantled) machine and a cigar-shaped, aluminium-bodied sidecar. In 1968 it was inherited by the vendor, who believes the machine may have been raced, possibly with the Ďchairí attached, as it used to have racing plates and the front tyre is worn on one side. The CS1 was last started - by VMCC members - around 20 years ago, when it was judged to sound very good mechanically. We are advised that the machine is 100 omplete and in full working order, only requiring re-commissioning to obtain an MoT. Sold strictly as viewed, this exciting restoration project is offered with expired MoT (1968).

Lot Details
Auction Collectors' Motorcycles
Bonhams, Classic & Motorcycle Mechanics Show, Stafford
TypeMotorcycle
Lot Number436
Estimate£7000-£8000
Outcome SOLD
Hammer Price£7000
Hammer Price (inc premium)£8050
Year1928
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Mileage-
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