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BSA B "Round tank"

Make Model	BSA B
Year	1927
Engine	Four stroke , single cylinder, side valve
Capacity	249 cc / 15.2 cub in
Bore and Stroke	63 x 80 mm
Exhaust	Single, stainless steel
Ignition	Magneto
Battery	6V
Starting	Slip on kick starter
Max Power	1.83 kW / 2.49 hp
Transmission	2-Speed
Final Drive	Chain
Seat height	Upwards adjustable from 711 mm / 28 in. lowest setting
Front Suspension	Single spring girder fork
Rear Suspension	None, spring loaded saddle
Front Tyre	2.25 x 24
Rear Tyre	2.25 x 24
Front Brakes	None
Rear Brakes	Hand lever and foot pedal woking independently on rear wheel dummy rim
Weight	77 kg / 170 lbs
Average fuel consumption	2.35 L/100 km / 42.5 km/l / 100 US mpg
Top speed	72 km/h / 45 mph

BSA was justly proud and underlined their pride with a bold fuel tank finish. In keeping with period trends the tank served both fuel and oil needs, but its cylindrical shape bucked then current trends, looking as though it ought to grace a lawnmower.

Instead of hiding it, BSA painted the tank bright green and emblazoned it with panels, lines and logos. And it is the tank which gave Model B its hindsight name.

As many British moped and two-stroke riders from the 1950s and 1960s know, riding a small low-powered machine makes you the lowest of the low in the eyes of some. No different in the 1920s and along with the sarcastic comments Model B riders copped for a few including famously mower tank, marrow tank, cucumber tank and round tank. Round tank stuck, BSA successfully banked this inverse praise and Round Tank owners are justly proud today.