The BSA A7 was a range of 500 cc parallel twin motorcycles built by the Birmingham Small Arms Company at its Armoury Road factory in Small Heath, Birmingham. Launched in 1946 with a 495 cc long-stroke engine, it was the first parallel twin BSA made, created to answer the Triumph Speed Twin and designed by Herbert Parker, David Munro and the company's chief designer Val Page. An improved 497 cc engine based on the A10 arrived in 1950, and a swinging arm frame replaced the rigid and plunger frames in 1954. The range, which included the faster A7S Star Twin, stayed in production with minor changes until the unit construction A50 superseded it in 1961 or 1962.
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Source BSA A7 (Wikipedia)
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Manufactured By
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Source BSA A7 (Wikipedia)Lead, manufacturerQuote, Lead, manufacturer
that was made by Birmingham Small Arms Company (BSA) at its factory in Armoury Road
Originated In
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As with other British motorcycles of the era, this set-up often led to oil leaks.
Sources
1. BSA A7 (Wikipedia)
Lead
The range was launched in 1946 with a 495 cc (30.2 cu in) long-stroke engine.
Lead, body style
The BSA A7 is a range of 500cc parallel-twin engined motorcycles
Engine
The 495 cc (30.2 cu in) twin cylinder engine produced 26 bhp (19 kW)
Model range, A7
Production ceased in 1962, when the unit-construction A50 was introduced.
Lead, manufacturer
that was made by Birmingham Small Arms Company (BSA) at its factory in Armoury Road
Engine, country of origin
As with other British motorcycles of the era, this set-up often led to oil leaks.
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