BMW R 100 CS
Number sold 4.038
Price 11.260,- DM
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| Type | four-stroke, two-cylinder, horizontally-opposed "Boxer" engine, air-cooled |
| Bore/stroke | 94 x 70,6 mm |
| Cubic capacity | 980 cm3 |
| Max power | 70 PS (51 kW) at 7250 rpm |
| Max torque | 76 Nm at 6000 rpm |
| Compression ratio | 9,5 : 1 |
| Valves per cylinder | 2 |
| Valve control | ohv, using push rod and rocker arm |
| Carburation system | 2 constant depression carburettors Typ Bing V 94/40/111-V 94/40/112 |
| Engine lubrication | wet sump |
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| Power transmission | |
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| Clutch | single discs, with lever-action diaphragm spring |
| Number of gears | 5 |
| Gear selection | dog-type gearbox (ratchet foot lever) |
| Gear ratios | 4,4 / 2,86 / 2,07 / 1,67 / 1,50 :1 |
| Rear wheel ratio | 1 : 2,91 or 1 : 3,0 |
| Bevel/crown wheel | 11 / 32 teeth or 11 / 33 teeth |
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| Electrical system | |
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| Alternator | Bosch 280 W |
| Ignition | Contact-free electronic ignition (Bosch) |
| Starter | Bosch 0,7 kW |
| Spark plugs | Bosch W 5 D / Beru 14-5D / Champion N 6 Y |
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| Suspension | |
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| Type of frame | double-loop tubular frame with bolt-on rear section |
| Front suspension | telescopic fork with hydraulic shock absorber |
| Rear suspension | long swinging arm with adjustable strut |
| Spring travel | 200 / 125 mm |
| Rims front | 1,85 B 19 |
| Rims rear | 2,15 B 18 |
| Tyres front | 3,25 H 19 |
| Tyres rear | 4,00 H 18 |
| Brakes front | single disc brake Ø 260 mm |
| Brakes rear | Simplex drum brake Ø 200 mm |
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| Dimensions and weights | |
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| Length x width x height | 2210 x 746 x 1210 mm |
| Wheel base | 1465 mm |
| Ground clearance | 165 mm |
| Tank capacity | 24 l |
| Unladen weight, full tank | 220 kg |
| Max permissible weight | 398 kg |
| Fuel consumption | 5,75 l / 100 km (at constant 90 km/h) |
| Acceleration | 0 - 100 km/h 4,4 s |
| Top speed | 200 km/h |
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