Bsa

BSA's first motorcycle, the 3.5 hp model, was exhibited at the 1910 Olympia Show in London and produced for the 1911 season, with the entire run selling out. The motorcycle business initially operated under BSA Cycles Ltd, a subsidiary established in 1919. A two-stroke model was offered from 1928 to 1931, but BSA's reputation rested on its reliable four-stroke singles and twins. The motorcycles were sold as affordable, practical machines — the company's advertising claimed "one in four is a BSA" — and were widely used for commuting and fleet duties, including telegram delivery for the Post Office and AA patrol sidecars.

The Gold Star is the most celebrated motorcycle BSA produced. Its name originated in 1937 when Wal Handley lapped the Brooklands circuit at over 100 mph on a BSA Empire Star and was awarded a traditional Gold Star badge, prompting BSA to develop the M24 Gold Star production model the following year.

After the Second World War, the ZB32 Gold Star was introduced in 1948 as a 348 cc all-alloy machine with a hand-built, dynamometer-tested engine. Each Gold Star was assembled individually, and no engine was released from the factory unless it produced an acceptable power output — a level of quality assurance unusual for production motorcycles of the era. The 499 cc B34 variant followed. The Gold Star was developed continuously through the BB, CB, DB, and finally DBD series. The 1956 DBD34, with its 38 mm bell-mouth Amal carburettor and swept-back exhaust, could reach 110 mph and dominated the Isle of Man Clubmans TT.

BSA Gold Stars won the Clubmans Junior TT in each year from 1949 through 1956, and took the Clubmans Senior TT in 1954, 1955, and 1956. In 1956 the Gold Star accounted for 53 of the 55 machines entered in the Junior Clubmans event, with just one Norton and one Velocette completing the field.

Production of the Gold Star ended in 1963, primarily because Lucas ceased to manufacture the magneto used in the B series singles.

To improve the American market position, BSA entered a team at the Daytona 200 in 1954 with a mixture of Gold Stars and A7 Shooting Stars. The result was a one-manufacturer sweep of the top five finishes, the first time a single brand had achieved this. In 1954 Chuck Minert won the Catalina Grand Prix — a 100-mile race on Santa Catalina Island off Los Angeles — on a modified Gold Star, leading BSA's US distributor Hap Alzina to persuade the factory to produce a replica, sold as the Gold Star Catalina from 1959 to 1963.

Mike Hailwood raced factory BSA triples at Daytona in 1970 and 1971. The 1970 effort was unsuccessful, with Dick Mann winning on a Honda CB750. In 1971 BSA returned with ten machines and Mann — having parted with Honda — won the race on a Rocket 3-based racer.

In motocross, Jeff Smith won the FIM 500 cc Motocross World Championship on a BSA B40 in both 1964 and 1965, the last two years the 500 cc title was won by a four-stroke until the mid-1990s.

Competition from Japan — principally Honda, Yamaha, and Suzuki — had eroded BSA's market share significantly by 1965. Poor management decisions, failure to develop new products, and expensive projects that did not recoup their investment led to mounting losses through the late 1960s. Reorganisation in 1971 concentrated motorcycle production at Triumph's Meriden plant, with components and engines made at BSA's Small Heath factory. By 1972 bankruptcy was imminent, and BSA's motorcycle businesses were merged with Norton-Villiers under a government-arranged rescue to form Norton Villiers Triumph (NVT), headed by Dennis Poore. The final BSA range was just four models: the Gold Star 500, the 650 Thunderbolt and Lightning, and the 750 cc Rocket Three. The BSA factories were subsequently closed, and the brand effectively ceased as a manufacturer.

When NVT was liquidated in 1978, the rights to the BSA brand name were purchased by a new company, the BSA Company Limited, formed by management. The brand continued in various hands for decades, producing military and off-road machines in limited quantities. In 2021 the Mahindra Group, which had acquired the BSA marque in 2016, announced a new BSA Gold Star — a 652 cc liquid-cooled machine developed in Birmingham and manufactured in India, paying homage to the styling of the original 1950s models.