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Key Specifications
Engine
Two cylinder boxer
Power
51 kW / 70 hp / @ 7000 rpm
Torque
76 Nm / 7.75 kgf-m / 56 ft-lb @ 6000 rpm
Fuel Capacity
24.00 litres
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Full 1981 BMW R 100RS Specifications
Year
1980 - 81
Make Model
BMW R 100RS
Seat Height
820 mm / 32.3 in
Wheelbase
1465 mm / 57.67 in
Ground Clearance
165 mm / 6.49 in
Height
1300 mm / 51.8 in
Length
2130 mm / 83.8 in
Width
746 mm / 29.37 in
Wet Weight (lbs.)
544.5 pounds
Wet Weight (kg)
247.0 kg
Fuel Capacity (l)
24.00 litres
Fuel Capacity (gal.)
6.34 gallons
Wet Weight (lbs.)
544.5 pounds
Wet Weight (kg)
247.0 kg
Fuel Capacity (l)
24.00 litres
Fuel Capacity (gal.)
6.34 gallons
Fuel Capacity
24 Litres / 6.3 US gal
Wet Weight
230 kg / 506 lbs
Stroke
4
Fuel Control
OHV
Engine Type
Two cylinder boxer
Displacement (ci)
59.74 cubic inches
Displacement (cc)
979.00 cc
Bore x Stroke (mm)
94.0 x 70.6 mm
Bore x Stroke (in,)
3.7 x 2.8 inches
Fuel Control
OHV
Engine Type
Two cylinder boxer, four-stroke
Displacement (ci)
59.74 cubic inches
Displacement (cc)
979.00 cc
Bore x Stroke (mm)
94.0 x 70.6 mm
Bore x Stroke (in,)
3.7 x 2.8 inches
Displacement
980 cc / 59.8 cub in.
Engine Detail
Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
Bore x Stroke
94 x 70.6 mm
Compression Ratio
9.5:1
Compression Ratio
9.5:1
Cooling System
Air cooled
Fuel Consumption
4.8 L/100 km / 20.8 km/l / 49 US mpg
Fuel Induction
2 x Constant depression carburettors, Bing 94/40/105 - 94/40/106
Ignition
Battery ignition
Lubrication
Wet sump
Starter
Electric
Valve System
2
Valve System
2
Clutch
Dry single plate, with diaphragm spring
Final Drive
Shaft
Final Drive
Shaft drive (cardan)
Final Drive Gear Ratio (Bevel/Crown Teeth)
11/32 teeth or 10/32 teeth
Gear Ratios
1st 3.38 / 2nd 2.43 / 3rd 1.93 / 4th 1.67 / 5th 1.50
Gearbox
5-speed
Gearbox
5-speed
Transmission / Drive
5 Speed
Frame Type
Double sown tubs, dual cradle
Suspension - Front
Telescopic fork with hydraulic shock absorber.
Suspension - Rear
Long swinging arm with adjustable strut.
Wheel Travel - Front
200 mm / 7.8 in
Wheel Travel - Rear
125 mm / 4.9 in
Alternator
Bosch 12V/240 W
Brakes - Front
2 x ∅260mm discs, 2 piston calipers
Brakes - Front
Dual disc
Brakes - Rear
Simplex ∅200 mm drum
Brakes - Rear
Single disc
Tyres - Front
3.25 - H19
Tyres - Front
3.25-19
Tyres - Rear
4.00 - H18
Tyres - Rear
4.00-18
Wheel Ratio - Rear
1:2.91 or 1:3.00
Wheels - Front
2.15 - B19
Wheels - Rear
2.50 - B18
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