BSA A7
The BSA A7 was a 500cc motorcycle model range made by Birmingham Small Arms Company (BSA) at its factory in Armoury Road, Small Heath, Birmingham. The range was launched in 1946 using a 495 cc (30.2 cu in) long stroke engine. An improved 497 cc (30.3 cu in) version based on the BSA A10 engine was launched in 1950. The various A7 models continued in production with minor modifications until 1961/2 when they were superseded by the unit-construction A50 model.
1949 BSA A7 | |
| Manufacturer | BSA |
|---|---|
| Production | 1946 - 1962 |
| Assembly | Small Heath, Birmingham England |
| Successor | BSA A50 |
| Engine | 495 and 497 cc (30.2 and 30.3 cu in) straight twin |
| Bore / stroke | 495: 62 mm × 82 mm (2.4 in × 3.2 in) 497: 66 mm × 72.6 mm (2.60 in × 2.86 in) |
| Top speed | 85 mph (137 km/h) (495) 90 mph (140 km/h) (497) |
| Power | 26 bhp (19 kW) (495) 30 bhp (22 kW) @ 5800 rpm (497) |
| Ignition type | Magneto |
| Transmission | Duplex primary chain to bolted up 4 speed gearbox Single row primary chain to separate 4 speed gearbox (swinging arm models) |
| Frame type | Rigid Plunger Half-duplex cradle |
| Wheelbase | 1,391 mm (54.75 in) |
| Weight | 166 kilograms (366 lb) (dry) |
| Fuel capacity | 3.5 imp gal (16 L) |
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