BSA B31 (1945-59)

Make Model: BSA B31


Year: 1945 – 59
Engine: Four stroke, single cylinder, Overhead valve
Capacity: 348 cc / 21.2 cub in.
Bore and Stroke: 71 x 88 mm
Compression Ratio: 6.5:1
Cooling System: Air cooled
Lubrication: Dry sump
Exhaust: Single, stainless steel and chrome
Carburetor: Single Amal type 76
Ignition: Lucas magneto MO1L
Starting: Kick start
Clutch: Multi-plate
Maximum Power: 16.2 kW / 22 hp @ 6000 rpm
Transmission: 4-Speed manual
Final Drive: Chain
Front Wheel: WM2 x 19 in.
Rear Wheel: WM2 x 19 in.
Front Tyre: 3.25 x 19 in. Dunlop Gold Seal
Rear Tyre: 3.5 x 19 in. Dunlop Gold Seal
Front Suspension: Hydraulic fork
Front Suspension: Hydraulic fork

Rear Suspension: Swinging arm fork with shocks
Front Brake: 8 in., drum
Rear Brake: 7 in., drum
Wet Weight: 175 kg / 385 lbs
Fuel Capacity: 19 L / 5 US gal
Top Speed: 110 km/h / 70 mph
Colours: Green/chrome plated tank and black frame /Maroon
Source: Wikipedia


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