The BSA B25 was a series of 250 cc (15 cu in) unit construction single-cylinder OHV four-stroke motorcycles made by the Birmingham Small Arms Company. Developed from the BSA C15, the machines were produced between 1967 and 1971. [4] …

2021年9月3日 · Make sure you compare this 1968 B25 Starfire to the 1971 BSA B25T Gold Star, a later iteration of the BSA 250 in off-road trim. Specifications: Engine: Four-Stroke Single, Unit; Type: Overhead Valves; Bore & Stroke: 67mm x 70mm; Displacement: 247cc’s; Compression Ratio: 10:1; Ignition: 12 Volt, Battery & Coil; Carburetor: Amal Concentric 928 ...

It was a tough engine, slightly undersquare with a 67mm bore, 70mm stroke, having an aluminum alloy head and barrel, with an iron liner, a one-piece forged crankshaft with two flywheels running to keep the vibration down, and a duplex-chain primary drive to handle all that power going to the four-speed tranny.

2013年3月21日 · BSA B25S Starfire To put it kindly, BSA’s unit-construction singles didn’t exactly enjoy the best of reputations; and that was despite seeming initially to have everything in their favour. First in the range was the 1958 C15, and compared with its C12 predecessor – recognisably based on the pre-war C11 – it was significantly lighter ...

bsa b25 The 250 cc BSA C25 Barracuda was first introduced in model year 1967 (1 August 1966 to 31 July 1967) to replace the C15 that had been in production since 1959. It used a modified version of the C15 engine and a modified version of the welded duplex frame first introduced in 1963 in the C15 competition model.

2007年10月22日 · 1968 BSA B25 Starfire 250. The very first Starfires to come into this country had the old skinny seven-inch brake drums on both 18-inch wheels, but that was soon changed to a full-width drum on...

2024年3月14日 · BSA B25 was a 247cc, unit single-cylinder bike, produced between 1967 and 1972. An evolution of the C15, and with roots harking back to the Triumph Tiger Cub, it held the British flag for the growing teenage market.

2016年1月13日 · The 1968 BSA B25 Starfire sports an air-cooled, four-stroke, 249cc, single cylinder powerplant paired to a four-speed, constant mesh manual transmission and can produce a claimed 26 horsepower at...

2019年11月23日 · BSA B25, B25SS, B25T & Fleetstar. Overview [edit | edit source] BSA B25 "B25SS" Review of the BSA B25 Starfire This little machine was an anomaly when it appeared on the showroom floors in 1968; though it was a rather attractive motorcycle, it was powered by an old-fashioned single-cylinder OHV engine.

2019年3月1日 · Reviving the Gold Star name, it broke new ground with a gray frame, a newly styled muffler heat shield and mandatory turn signals. Aimed at American riders, about 90% of its market, it did not fare well with British traditionalists and in America in the early 1970’s its durability and performance were not enough.