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The BSA A65 Star was a Birmingham Small Arms Company (BSA) motorcycle aimed at the US market for unit construction twins. As well as giving a clean look to the engine, with the pushrod passages part of the cylinder block casting, unit construction reduced the number of places oil could leak from. [ 3 ]
The BSA unit twins were a range of unit construction twin-cylinder motorcycles made by the Birmingham Small Arms Company (BSA) and aimed at the US market. A range of 500 cc (31 cu in), 650 cc (40 cu in) and 750 cc (46 cu in) twins were produced between 1962 and 1972, [1] but they were really developments of the older pre-unit A7/A10 model range with less weight. [2]
The BSA A65R Rocket was one of a series of unit construction twin cylinder Birmingham Small Arms Company (BSA) motorcycles made in the 1960s. A version branded as the A65 'Thunderbolt Rocket' was aimed at the US market. [2] The A65R Rocket was produced from 1964 but was stopped in 1965 when all development at BSA was halted by financial ...
All BSA parallel twins were pushrod operated overhead valve machines. The A7 and A10 models were semi-unit construction until about 1953 and pre-unit construction thereafter. All A50, A65 and A70 models were unit construction.
BSA A65 may refer to a number of motorcycle models produced by the Birmingham Small Arms Company (BSA): BSA A65 Star; BSA A65 Rocket; BSA Hornet; BSA Lightning;
Sharing many A65 cycle parts, the Lightning Rocket had a slimmer fuel tank and mudguards, with additional chrome. From 1965, the A65 was discontinued in the UK and the BSA A65L Lightning became the main BSA production twin. [1] BSA Lightning Rocket at the National Motorcycle Museum (UK)
The designations in this Wikipedia list represent so-called "major items". For each of the major items, there were separate, designated "Standard Nomenclature Lists" — extensive parts catalogs for supply and repair purposes. In essence, the index was a list of lists. There could be numerous volumes, changes, and updates under each single item ...
The BSA Spitfire Hornet was a true racing motorcycle, with the A65 engine upgraded with high compression pistons and a performance cam. The gear ratios were altered for sprint acceleration and the brakes (the 8 inch model from the BSA Gold Star) were improved with special cooling fins. [2]