Bsa B50 is a four stroke 500 cc single cylinder motorcycle. Made between 1971-1973. 1958 saw the beginning of a complete new engine/transmission design with the introduction of unit construction machine in place of the 250 cc C12. The first Motorcycle the 250cc C 15 Star, was an instant success.

The BSA B50 was a single-cylinder 499 cc (30.5 cu in) ohv motorcycle, produced by BSA at their factory in Small Heath, Birmingham. The last of the big capacity unit-construction singles from the Birmingham Small Arms company, it had an alloy engine with a bore of 84 mm (3.3 in) and a stroke of 90 mm (3.5 in). As well as the road version ...

2021年5月3日 · The BSA B50 MX was the final competition motorcycle ever built by BSA, a proud British motorcycle manufacturer who had built a staggering number of race winning motorcycles over its decades long history. As the name suggests, the B50 MX was the motocross version of the standard B50.

2013年12月10日 · When BSA announced that its 1971 range would include a new 500cc unit-construction single called the “Gold Star,” it provoked outrage among traditional British motorcyclists. How could they sully the name of the mighty Goldie — the most successful British clubman’s race bike and favorite of the café racer crowd — by attaching it to ...

2023年9月25日 · BSA offered the B50 in three different flavors, the SS or street scrambler version, the T or Victor Trail for light off-road duty, and the bare bones MX for serious off-road use only. There were traits that I liked of each version of the B50. The SS model had the larger 8-inch front Conical drum brake.

This BSA B50 buyers guide features: BSA B50 specifications and history, riding BSA B50, ownership tips; BSA B50 specialists and links; BSA B50 models: B50SS Gold Star, B50T Victor Trial, B50MX Victor Scrambler.

500 ccs of powerful performance, flowing from the smoothest, surest source you can get, the four-stroke, single cylinder, overhead valve engine. And every other feature is just as logically planned, including: inside-the-frame pipes, one compact source-box for electrics - with an instantly detachable plug, and the conical aluminum hubs.

2021年6月16日 · The BSA B50MX was the motocross version of the beloved B50, which would be the last of the big unit-construction singles to come from the Birmingham Small Arms company before their demise in 1973. That gives the MX quite a distinction:

2024年4月3日 · Starting in 1971, the BSA factory built the 499cc, 84mm x 90mm bore-and-stroke, unit-construction, dry-sump B50 in answer to the growing demand for a good four-stroke off-road bike. Riders...

2021年7月14日 · All that power, 28 pound-feet of torque, and the tremendous loads created by that big crank, rod and piston assembly spinning and reciprocating at 6000 rpm. Mechanical loads, vibration and crankcase pressure conspired to make these notorious oil leakers. These bikes also needed a 5-speed, really bad.