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Scott bikes usa11/15/2022 ![]() ![]() ![]() While Scott's production machines were marketed as a kind of luxury "wheeled horse" for the Edwardian Gentleman, there was valuable publicity to be had in competition success and the early Scott motorcycles were so powerful that they often easily beat four-stroke motorcycles of the same capacity. By recording brake and indicator readings he was able to experiment with port shapes and piston shapes, developing the 'curved top' (deflector) piston. In parallel to this he continued work on a 4" bore, 4" stroke marine engine which developed 10HP at 800rpm, fitted with a large water-cooled brake wheel (a dynamometer). Various ingenious ignition arrangements were used including link work driven by a pin placed mid-way on the connecting rod. His next engine had cast iron cylinders of 2 1/4" bore, and eventually drove by belt to clutch countershaft and then by chain to the rear wheel. ![]() He described the drive system as 'useless in the wet', and he could not prevent the cylinders from scoring. This twin cylinder engine had steel cylinders with shrunk-on aluminium radiator 'flanges', and drove the front wheel via friction directly to the tyre. His first attempt at a motor cycle was fitting an engine of his own design to a Premier bicycle in 1901. Scott's first experiments with a two-stroke were in a motor boat, where he was able to make tests and obtain 'diagrams' under working conditions. ![]() Scott M.I.M.E) and used to drive machinery in his experimental workshop. He said this attraction to the two stroke was further enhanced by the reliable and excellent service from a two stroke engine designed by his brother (A. In an article in Motor Cycle magazine in 1914, Alfred Scott wrote that he was drawn to the two-stroke engine because he was trained on high speed steam and marine engines, and when turning his attention to gas and petrol engines the regular power strokes of the two-stroke (or Day cycle as he sometimes called it), seemed preferable to the one power stroke in four of the Otto cycle. ![]()
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