Броу мотоциклдерінің тарихы және дамуы

Brough Motorcycles were made by William E. Brough in Nottingham, England, from 1902 to 1926 , after some earlier experimentation with motorised tricycles. The Brough Superior company was a separate company created by his son, George Brough.

The first Brough motorcycle was built in 1902, and had a single cylinder engine hung from the downtube. By 1908 there were a range of models with 2.5 hp and 3.5 hp single cylinder and 5 hp V twin engines (all made by Brough). By 1912 there was a 6 hp V twin, and an 8 hp engine was also made intended for use in the Brough light car. In 1913 William Brough developed a flat twin engine in line with the frame. This 497cc engine had overhead valves, 70mm bore and 64.5mm stroke, and had a magneto fitted above and a 2 speed gearbox below. By the end of 1914 it had replaced all other engines in the Brough range, and using it only 3 models were planned for 1915. The three models were the HS which was fitted with a two speed countershaft gear operated by dog clutches, with chain drive to the gearbox, and John Bull rubber belt drive to the rear wheel over an adjustable pulley allowing the top gear range to be varied. No clutch or kick start was provided. The second model was the HB, which was fitted with a Sturmey Archer 3 speed hub gearbox and handle starter. The third model was the HTT, which was very similar to the HS but fitted with a specially tuned engine with high compression, lightweight steel pistons, different camshafts, and special front cylinder lubrication. During the war Brough introduced a larger flat twin of 6 hp rating, with 70mm bore and 90mm stroke (692cc), it shared a lot in common with the earlier 6 hp V twin.