BSA B25 Gold Star

23 Апр 2015 | Author: | Комментарии к записи BSA B25 Gold Star отключены
BSA B 25 Star

The story of the BSA Gold Star way back to I937 when the Health company introduced a new single cylinder model the Empire Star. At that a gold star was awarded at the circuit to any rider who managed to lap at I00 mph during a race.

The staff at BSA if their new sporty single be tuned up in order to win one of the prizes, they had not entered into since I92I when all six of sloper models failed to in the Senior T.T. But they to try, and recruited the retired Wal for the purpose. On 30 June I937 the was set.

Handley was entered in a outer circuit event and by the lap he had fought his way to the front of the field, finishing several hundred ahead. His average speed was mph with one amazing lap of l07-57mph! The were impressed, Handley home with his gold and BSA got more publicity than could have imagined.

At the Earls Court Show the year a replica of that machine was on show and, of it was called the Gold Star.

The Star received the model M24 but the production model was certainly different to Handley’s mount. of an iron cylinder head and the 496 cc single was fitted with equivalents with an austenitic liner and valve seat The valve gear was enclosed and by a pressure-feed dry sump system the oil tank situated beneath the

Drive to the rear wheel was by and this came via a four Elektron gearbox and a multi-plate The mixture was drawn into the by an Amal TT type carburettor, the exception of a track model came fitted with a carburettor and various other parts. Nevertheless, each owner had the satisfaction of knowing his engine was individually built and by BSA.

Each power fitted neatly into a cradle type frame was made from high steel tubing. At the front were tubular forks an adjustable damper unit, the rear end remained solid as on machines of the period. Considering the of some present-day machines the Star was light, tipping the at a mere 3I5 lbs including lights and

Starting the big single was easy —as as you knew how! First, it was to flood the carburettor, secondly the ignition and finally find the … while in gear. neutral had again been a quick prod in the kickstarter brought the beast to life.

The of the Gold Star was commendable. from standstill was very and when the four-speed gearbox was to the full a top speed of around 90 mph be achieved. For normal cruising, the engine felt best at a of around 70 mph.

Fuel consumption was generally in the of 64mpg, thus giving a tank range of almost 200

With its superb handling hazard lay ahead, the bike keep on line and was never off course even in adverse conditions. Brakes consisted of 7 in by in drums at both front and with smooth but powerful From 30 mph the stopping distance was 28 a figure on par with its modern

In I940 the war prevented further of the big single and the factory concentrated on its khaki cousin, the M20. the model returned in I948, first as a 350 and later as a 500, with telescopic front A few years later the design was revised and many performance were offered that transform the basic roadster a clubman’s racer.

Consequently the Clubman’s TT was inundated Gold Stars but it was not only at racing that the model In trials and scrambling the bike many awards and over the it was again substantially redesigned, but in the machine saw its last year of and the Gold Star faded

BSA B 25 Star
BSA B 25 Star


(1938 model)

Air-cooled, four-…, single-cylinder. 82 mm in) bore x 94 mm (3-70 in) … = 496 cc cu in). Maximum power 30 bhp at rpm. Two valves each via push-rods.

Single Amal TT carburettor Four-speed gearbox. Chain to rear wheel frame

cradle suspension

Front Tubular forks with damper unit Rear Solid rear end brakes

— Single drum — Single drum

BSA B 25 Star
BSA B 25 Star
BSA B 25 Star
BSA B 25 Star
BSA B 25 Star


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