1981 BMW R 100CS technical specifications

1981 BMW R 100CS technical specifications

Technical specifications

Model: R 100CS
Years: 1981-82
Engine: Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
Capacity: 980 cc / 59.8 cu in.
Bore x Stroke: 94 x 70.6 mm
Cooling System: Air cooled
Compression Ratio: 9.5:1
Induction: 2x Constant depression carburetors, Bing 94/40/111 - 94/40/112
Ignition: Battery ignition
Alternator: Bosch 12V/240 W
Starting: Electric
Max Power: 51 kW / 70 hp @ 7000 rpm
Max Torque: 76 Nm / 7.75 kgf-m / 56 ft-lb @ 6000 rpm
Clutch: Dry single plate, with diaphragm spring
Transmission: 5 Speed
Gear Ratio: 1st 4.40 / 2nd 2.86 / 3rd 2.07 / 4th 1.67 / 5th 1.50:1
Gear Ratio Sport Version: 1st 3.38 / 2nd 2.43 / 3rd 1.93 / 4th 1.67 / 5th 1.50:1
Rear Wheel Ratio: 1:2.91 or 1:3.00
Bevel / Crown wheel: 11/32 teeth or 10/32 teeth
Final Drive: Shaft
Frame: Double sown tubs, dual cradle
Front Suspension: Telescopic fork with hydraulic shock absorber.
Front Wheel Travel: 200 mm / 7.8 in
Rear Suspension: Long swinging arm with adjustable strut.
Rear Wheel Travel: 125 mm / 4.9 in
Front Brakes: Single ∅260mm disc
Rear Brakes: 200 Drum
Front Wheel: 2.15 - B19
Rear Wheel: 2.50 - B18
Front Tyre: 3.25 - H19
Rear Tyre: 4.00 - H18
Dimensions: Length 2110 mm / 83.07 in Width 746 mm / 29.4 in Height 1210 mm / 47.6 in
Wheelbase: 1465 mm / 57.67 in
Seat Height: 820 mm / 32.3 in
Ground Clearance: 165 mm / 6.49 in
Wet Weight: 220 kg / 484 lbs
Fuel Capacity: 24 L / 6.3 US gal
Consumption Average: 4.8 L/100 km / 20.8 km/l / 49 US mpg
Standing ¼ Mile: 12.9 sec / 168.7 kmh / 104.8 mph
Top Speed: 198 km/h / 123 mph
Road Test: Cycle World 1981

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BMW R 100CS technical specifications