BMW R 100 RS 1980



TECHNICAL SPECIFICATION
Model ID
Manufacturer (Make)BMW
Model NameR 100 RS
Year1980
Category(class)Classic
Engine
Engine Capacity (Displacement)979 ccm (59.74 cubic inches)
Engine Type2 cylinders
Bore x StrokeØ94.0 mm x 70.6 mm (Ø3.7 inches x 2.78 inches)
Bore/Stroke Ratio1.33
Stroke4
Valves per Cylinder2
Timing SystemOHV
Cooling SystemAir
Powertrain
Gearbox5 speed
Chassis/Suspension/Brakes
Front BrakesDual disc
Rear BrakesSingle disc
Front Tire3.25-19
Rear Tire4.00-18
Dimensions
Curb Weight247 kg (545 lb)
Fuel Capacity 24 litres (6.34 gallons)
Performance
Max Power70.00 HP (51.1 kW) at 7000 RPM
Power/Weight Ratio0.28 Hp/Kg
Top Speed193 km/h (120mph)
Acceleration (dart, speedup) time
0-100 km/h5.3 seconds
0-60 mph5.1 seconds
  • 1/4 mile
  • -
  • 60 to 140 km/h, highest gear
  • -

    Engine


    Motor Type

    Four-stroke two cylinder horizontally opposed "Boxer" engine, air cooled

    Bore x Stroke

    94 x 70.6 mm (3.70 x 2.78 in)

    Displacement

    980 cc

    Max Power

    70 hp (51 KW) at 7,250 rpm

    Max Torque

    76 Nm / 56 ft lb at 5,500 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, Bing 94/40/105 - 94/40/106

    Engine Lubricating System

    Wet sump



    Power Transmission


    Clutch

    Dry single plate, with diaphragm spring

    Number of Gears

    5

    Gear Selection

    Dog type gearbox (ratchet foot lever)

    Gearbox Ratios

    4.4 / 2.86 / 2.07 / 1.67 / 1.50 : 1 (Optional sport version: 3.38 / 2.43 / 1.93 / 1.67 / 1.50

    Rear Wheel Ratio

    1 : 3.0 or 1 : 2.91

    Bevel/Crownwheel

    11 / 33 teeth or 11 / 32 teeth



    Electrical System


    Ignition System

    Battery ignition. From Sept 1980: contact free electronic ignition (Bosch)

    Alternator

    Bosch 12V/240 W

    Starter

    Bosch 0.6 hp (from 1978: 0.7 Kw)

    Spark Plugs

    Bosch W 225 T 30 / Beru 230/14/3 A / Champion N6Y



    Chassis


    Type of Frame

    Double loop tubular frame with bolt on rear section

    Front wheel suspension

    Telescopic fork with hydraulic shock absorber

    Rear wheel suspension

    Long swinging arm with adjustable strut

    Spring Travel Front/Rear

    200 / 125 mm (7.87 x 4.92 in)

    Wheel Rims, Front

    1.85 B 19

    Wheel Rims, Rear

    2.50 B 18

    Tyres, Front

    3.25 H 19

    Tyres, Rear

    4.00 H 18

    Brakes, Front

    Dual disc brake 260 mm / 10.23 in diameter. ATE 1 piston caliper up to 1981. 1981 models Brembo 2 piston caliper

    Brakes, Rear

    Simplex drum brake 200 mm / 7.87 in diameter (from 1978: single disc brake 260 mm / 10.23 in diameter)



    Dimensions/Weights


    Length x Width x Height

    2130 (from 1978: 2210) x 746 x 1300 mm (83.85 (or 87) x 29.37 x 51.18 in)

    Wheel Base

    1465 mm / 57.67 in

    Fuel Tank Capacity

    24 litres / 5.27 gal / 6.34 gal US

    Unladen Weight with Full Tank

    230 Kg / 506 lb

    Max. Permissible Weight

    398 Kg / 876 lb

    Ground Clearance

    165 mm / 6.49 in

    Seat Height (Unladen)

    820 mm (32.3 inches)

    Fuel Consumption (at constant 90 Kph)

    5.75 litres 100 Km / / 49 mpg / 40 mpg US

    Top Speed

    200 Kph / 124 mph

    Acceleration 0 - 100 Kph / 62 mph

    4.6 seconds


    BMW R 100 RS 1980 Reviewed by Barra Khatab On Sunday, February 7, 2010, at 8:57 AM Rating: 5
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