BSA B

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Bsa-b-1928-1928-3.jpg
BSA B
Manufacturer
BSA
Production 1928
Class Classic
Engine
air-cooled, four-stroke, single cylinder, side valve
Bore / Stroke 63.5mm x 63.5mm
Horsepower 2.55 HP (1.9 KW) @ 3000RPM
Transmission Gear box: 2-speed, manual

Final Drive: chain

Clutch: dry
Suspension Front: single spring girder fork
Rear: hard-tail, sprung seat
Brakes Front: none
Rear: hand lever and foot pedal working independently on rear wheel dummy rim
Front Tire 2.25 x 24
Rear Tire 2.25 x 24
Seat Height 27.99 inches (711 mm)
Weight 77.0 kg (wet)
Manuals Service Manual


The BSA B was a air-cooled, four-stroke, single cylinder, side valve Classic motorcycle produced by BSA in 1928. Claimed horsepower was 2.55 HP (1.9 KW) @ 3000 RPM.

Engine[edit]

A 63.5mm bore x 63.5mm stroke result in a displacement of just 249.0 cubic centimeters.

Drive[edit]

The bike has a 2-speed, manual transmission. Power was moderated via the dry.

Chassis[edit]

It came with a 2.25 x 24 front tire and a 2.25 x 24 rear tire. Stopping was achieved via none in the front and a hand lever and foot pedal working independently on rear wheel dummy rim in the rear. The front suspension was a single spring girder fork while the rear was equipped with a hard-tail, sprung seat.

1928 BSA B[edit]

1928 BSA B 1928 BSA B 1928 BSA B 1928 BSA B

The 1927 BSA B, also known as the BSA "Round Tank", had, at its heart, an air-cooled, four-stroke, 249cc, single cylinder lump paired to a two-speed manual transmission and could reach a maximum power output of 2.5 horsepower at 3000 rpm.

The most defining feature for this machine would be the cylindrical shaped fuel tank, hence the nickname, but it also comes with a single spring girder fork, a sprung single saddle, a hard-tail rear suspension, a single exhaust system, wire-spoked wheels and a rear luggage rack.