The BSA B21 was a 250 cc overhead valve single cylinder motorcycle built at Small Heath, Birmingham, from 1937 until the outbreak of the Second World War in 1939. It belonged to the new range of lightweight and heavyweight singles designed by Val Page when BSA rationalised its models after the depression of the 1930s, and sat beside the 500 cc M23 Empire Star. It had magneto ignition, an Amal carburettor and a four speed hand change gearbox, with spring loaded girder front forks, an unsprung rear and a sprung saddle for comfort. When war began BSA turned to military contracts, adopted the side valve M20, and dropped the B21.
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Source BSA B21 (Wikipedia)
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The BSA B21 was a British motorcycle made by Birmingham Small Arms Company (BSA) at their factory in Small Heath, Birmingham.
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Source BSA B21 (Wikipedia)Lead, manufacturerQuote, Lead, manufacturer
The BSA B21 was a British motorcycle made by Birmingham Small Arms Company (BSA) at their factory in Small Heath, Birmingham.
Sources
1. BSA B21 (Wikipedia)
Lead
Production started in 1937 and ended with the outbreak of World War II in 1939.
Lead, body style
The BSA B21 was a British motorcycle made by Birmingham Small Arms Company (BSA)
Development
The B21 used a single-cylinder OHV engine with magneto ignition
Lead, manufacturer
The BSA B21 was a British motorcycle made by Birmingham Small Arms Company (BSA) at their factory in Small Heath, Birmingham.
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