BSA Dandy (1957-62)

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The BSA Dandy motorcycle was produced from 1957 to 1962. It had a 70 cc, 2-stroke, single cylinder engine with a bore and stroke of 45 x 44 mm and a compression ratio of 7.25:1. The bike had both a kick start and a hand-operated start. The clutch was a dry plate and the transmission had 2 speeds with a pre-selector. The final drive was via chain. The frame was constructed from steel pressings and was an open loop, seam-welded construction. The front suspension was a leading bottom link fork and the rear suspension used coil springs. The front and rear wheels were both 2.5 x 15 inches in size and had drum brakes measuring 4 inches. The bike had a top speed of around 50 km/h or 31 mph, and came in light green, honey beige, and dark lavender grey colors. The fuel capacity was 3.4 L or 0.9 US gallons, and the dry weight was 38.6 kg or 85 lbs.

Technical specifications:

Make Model: BSA Dandy

Year: 1957 – 62


Engine: Two stroke, single cylinder
Capacity: 70 cc / 4.27 cub in.
Bore and Stroke: 45 x 44 mm
Compression Ratio: 7.25:1
Cooling System: Air cooled
Exhaust: Single, steel, silencer finished in heat resistant silver-aluminium paint
Starting: Kick start or hand operated
Clutch: Dry plate
Transmission: 2-Speed with pre-selector
Final Drive: Chain
Overall Gear Ratios: 1st 17.3 / 2nd 8.9:1
Frame: Open loop frame constructed from steel pressings, seam welded
Front Suspension: Leading bottom link fork
Front Wheel Travel: 63.5 mm . 2.5 in.
Rear Suspension: Coil springs

Rear Wheel Travel: 63.5 mm / 2.5 in.
Front Wheel: 2.5 x 15 in
Rear Wheel: 2.5 x 15 in
Front Brake: 4 in., drum
Rear Brake: 4 in., drum
Dimensions: Length: 1702 mm / 67 in. Height: 838 mm / 33 in.
Wheelbase: 1143 mm / 45 in.
Ground Clearance: 114 mm / 4.5 in.
Saddle Height: 724 mm / 28.5 in.
Dry Weight: 38.6 kg / 85 lbs
Fuel Capacity: 3.4 L / 0.9 US gal.
Top Speed: 50 km/h / 31 mph (approximate)
Colours: Light green, Honey beige, Dark lavender grey
Source: Iceni cam mag

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