Silk History
Silk was founded in the late 1960s by George Silk, a Scott motorcycle enthusiast who worked for Derbyshire Scott specialist Tom Ward. George Silk developed a racing motorcycle by fitting a Scott engine into a Spondon frame. Following some success with a `Silk Special at the Barbon Hill Climb in 1970, Silk began planning a road going prototype with his business partner Maurice Patey. They set up Silk Engineering and began providing a spares and repair service for Scott motorcycle owners. They also offered a range of modifications to improve the reliability and performance of Scotts, as well as improving the lubrication and gas flow. Silk exhibited the prototype at the Racing and Sporting Motorcycle Show in London in 1971. Orders exceeded his capability to produce them but he hand built 21 Silk-Scott Specials between 1971 and 1975. The supply of Scott engines was limited so customers were asked to find their own.
Matt Holder, who had bought the rights to the Scott engines disputed the use of the Scott trademark and prevented Silk from making Scott engines under licence, so Silk had to develop his own. A new two stroke engine was developed by David Midgelow (from Rolls Royce engineering) and George Silk, and they had assistance from two-stroke expert Gordon Blair of Queen University, Belfast, who optimsed the porting with the aid of specialist computer programs.
Matt Holder, who had bought the rights to the Scott engines disputed the use of the Scott trademark and prevented Silk from making Scott engines under licence, so Silk had to develop his own. A new two stroke engine was developed by David Midgelow (from Rolls Royce engineering) and George Silk, and they had assistance from two-stroke expert Gordon Blair of Queen University, Belfast, who optimsed the porting with the aid of specialist computer programs.
The Silk 700S was launched in 1975 and featured the new engine in a specially designed steel tubular frame made by Spondon of Derbyshire, who also made the forks. At a cost of 1355 it was expensive and more than any other production motorcycles of the time. The 700S continued to be developed at the Darley Abbey works in Derbyshire, along with the SPR Production Racing version. Production was slow, with just two motorcycles a week coming off the production line. Customers could select from five colour schemes – British Racing Green, metallic blue or green, black with gold coachlines or plain red. There was also a Scott special edition in purple and cream – and a special scheme similar to Silk Cut cigarettes, which were popular at the time.
The thermo-syphon cooling system boiled water using engine heat, then fed it back from the radiator in a rubber tube to the engine cases, where it boiled again, removing the need for a water pump.The Silk Engineering company was taken over by the Kendal based Furmanite International Group in 1976 who continued production of the Silk 700S and in 1977 it was upgraded to the 700S Mk2, which Silk called the Sabre. Improvements from the Mk 1 included finned cylinder barrels, a redesigned seat, instruments and rear light nacelle. In 1978 the 100th Silk motorcycle was produced and production continued until December 1979 when Silk realised they were losing 200 with every motorcycle sold.
The thermo-syphon cooling system boiled water using engine heat, then fed it back from the radiator in a rubber tube to the engine cases, where it boiled again, removing the need for a water pump.The Silk Engineering company was taken over by the Kendal based Furmanite International Group in 1976 who continued production of the Silk 700S and in 1977 it was upgraded to the 700S Mk2, which Silk called the Sabre. Improvements from the Mk 1 included finned cylinder barrels, a redesigned seat, instruments and rear light nacelle. In 1978 the 100th Silk motorcycle was produced and production continued until December 1979 when Silk realised they were losing 200 with every motorcycle sold.