Lot details Registration No: Un-Reg Engine No: 90111 cc: 425
This interesting machine was built by the late Ian Paskin of Birmingham, a former Norton works engineer and a competitive rider in grass track, speedway and road racing.
The cycle parts are comprised of a "featherbed" frame fitted with a complete "Manx" front end. Alloy rims, a central oil tank and short circuit Manx style tank are fitted, together with a fly-screen, rear-sets and clip-on handlebars. The bike is finished in the traditional Norton silver and black livery and is described as being in "first class" condition throughout.
At the heart of the machine is an overhead valve Norton single that has been the subject of a considerable amount of work. The barrel was shortened by 21mm and the compression ratio increased to 10:1 which Mr Paskin calculated was the highest achievable figure given the constraints imposed by the required cylinder head volume and piston after the latter had been machined to remove excess metal around the squish area. The cylinder head chamber was reshaped, blended and polished with similar attention being paid to the inlet and exhaust throats. The valves were modified and the seats recut with new valves being lapped in. Throughout the build up of the engine Mr Paskin continually checked his calculations with mock build ups in addition to his calculations. After approximately forty hours work he was satisfied that he had achieved his aim of producing a rapid Norton pushrod engine for use in sprints and short circuit racing, a view that the current owner agrees with.
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