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Share of the Birmingham Small Arms Company Ltd., issued 18 July 1930. The Birmingham Small Arms Company Limited (BSA) was a major British industrial combine, a group of businesses manufacturing military and sporting firearms; bicycles; motorcycles; cars; buses and bodies; steel; iron castings; hand, power, and machine tools; coal cleaning and handling plants; sintered metals; and hard chrome ...
Early examples had rigid frames; later models had plunger suspension: D3 Bantam Major 150 cc 1954 1957 All-welded swinging arm frame - some had plunger rear suspension D5 Bantam Super 175 cc 1958 1958 All-welded swinging arm frame similar to D5 D7 Bantam Super 175 cc 1959 1966 Swinging-arm frame with separate rear subframe bolted on
The BSA B25 was a series of 250 cc ... Engine and frame numbers were prefixed B25S. [20] ... Best of British bikes. Patrick Stephens.
The BSA A10 series was a range of 646 cc (39.4 cu in) air-cooled parallel twin motorcycles designed by Bert Hopwood and produced by Birmingham Small Arms Company at Small Heath, Birmingham from 1950 to 1963.
Aerozine ceramic external bottom bracket bearing cups for BSC/ISO standard, that is M34.798×1.058 mm (1.37″-24 TPI) threads and a 68 mm wide bottom bracket shell. The bottom bracket on a bicycle connects the crankset (chainset) to the bicycle and allows the crankset to rotate freely.
New Hudson bicycles were produced in Birmingham, initially at the St George's Works, and latterly at BSA's Waverley Works. Advertising by dealer, H. Fitzpatrick, in June 1907 mentioned the speed records achieved on New Hudson bicycles by Mr G Flint, including records for the 1/2 mile standing start, the 1/4 mile flying start, and the 1/4 mile ...
By the 1973 season BSA/Triumph had become part of Norton Villiers Triumph, [15] and the BSA brand had been dropped so only Triumph badged triples were used. [16] The American Triumph Importers ran a team for the 1974 season. Frames for these bikes were copies of the North frame made by Wenco in California.
BSA had previously produced a bike with an A10 engine in a Gold Star frame - the 1957 Spitfire Scrambler. [3] It has been suggested that as both the Gold Star and the A10 were at the end of their production life, and BSA wanted riders to switch to the new unit twins , this was a convenient way to use up the stock of pre-unit parts.