Sunbeam B1 (1957-64)
Comparison technical specifications
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| Make: | Sunbeam |
| Model: | B1 |
| Years: | 1957-64 |
| Engine: | Parallel twin cylinder, 4 stroke |
| Capacity: | 250 cc / 15.3 cu in |
| Bore x Stroke: | 56 x 50.6 mm |
| Cooling System: | Forced air cooled |
| Compression Ratio: | 6.5:1 |
| Battery: | 12V |
| Starting: | Electric |
| Max Power: | 7.5 kW / 10 hp @ 5500 rpm |
| Transmission: | Four speed |
| Final Drive: | Enclosed chain in oil bath |
| Frame: | Tubular frame |
| Ground Clearance: | 127 mm / 5.0" |
| Front Brakes: | Drum, 127 mm diameter |
| Rear Brakes: | Drum, 127 mm diameter |
| Tyres, Front and Rear: | 3.50 x 10" |
| Dri weight: | 110 kg / 243 lbs |
| Fuel Consumption: | 2.4 L/1000 km/ 41.7 km/l / 118 Imp mpg / 98 US mpg |
| Top Speed: | 97 km/h / 60 mph |