BMW R 6
Number sold 1.850
Price 1.375,- RM
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| Internal Designation | 261 |
| Engine type | four-stroke two-cylinder flat-twin |
| Bore/stroke | 70 x 78 mm |
| Cubic capacity | 600 cm3 |
| Max power | 18 PS at 4500 U /min |
| Compression ratio | 6 : 1 |
| Valves per cylinder | sv |
| Carburation system | 2 carburettor, Typ Amal M 75 / 426 / S |
| Engine lubrication | forced-feed lubrication |
| Oil pump | gear pump |
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| Power transmission | |
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| Clutch | single discs, dry |
| Number of gears | 4 |
| Shifting | foot Shifting (+ auxiliary manual lever on the gear block) |
| Gear ratios | 3,6 / 2,28 / 1,7 / 1,3 |
| Rear wheel ratio | 1 : 3,89 (sidecar 1 : 4,62) |
| Bevel/crown wheel | 9 / 35 teeth (sidecar 8 / 37 teeth) |
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| Electrical system | |
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| Alternator | Bosch RD 45/6 2800 RS 15 |
| Ignition | battery ignition |
| Spark plugs | Bosch M 175 T 1 |
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| Suspension | |
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| Designation | 250 |
| Type of frame | twin-loop steel tubular frame |
| Front suspension | telescopic fork |
| Rear suspension | rigid |
| wheel rims | 3 x 19 |
| Tyres front | 3,50 x 19 |
| Tyres rear | 3,50 x 19 |
| Brakes front | drum brakes, Ø 200 mm |
| Brakes rear | drum brakes, Ø 200 mm |
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| Dimensions and weights | |
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| Length x width x height | 2130 x 800 x 950 mm |
| Wheel base | 1400 mm |
| Tank capacity | 15 l |
| Unladen weight, full tank | ca. 175 kg |
| Load rating | 210 kg |
| Fuel consumption | 3,5 / 100 km |
| Oil consumption | 1 / 1000 km |
| Top speed | 125 km/h |
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