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R 100 S

R 100 S
. Data sheet
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Production
Begin of Production 1976
End of Production 1978
Number Sold 11.762
Price 10.190,- DM
Engine
Motor Type four-stroke, two-cylinder, horizontally-opposed "Boxer" engine, air-cooled
Bore x Stroke 94 x 70,6 mm
Cubic Capacity 980 ccm
Max Power 65 hp (48 KW) [1978: 70 hp (51 KW)] at 6600 rpm (1978: 7250 rpm)
Max Torque 75 Nm [1978: 77 Nm] at 5500 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 94/40/103-104 or 105-106
Engine Lubrication wet sump
Power transmission
Clutch dry single plate, with 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 (optional sport version 3.38 / 2.43 / 1.93 / 1.67 / 1.50)
Rear Wheel Ratio 1 : 2.91 or 1 : 3.0
Bevel / Crownwheel 11 / 32 teeth or 11 / 33 teeth
Electrical system
Ignition battery ignition
Alternator Bosch 12 V/240 W
Starter Bosch 0.6 hp
Spark Plugs Bosch W 225 T 30/Beru 230/14/3 A/Champion N 6 Y
Chassis
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 front/rear 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 dual-disc brake 260 mm dia
Brakes rear simplex drum brake 200 mm dia [1978: single disc brake 260 mm dia]
Dimensions / Weights
Length x Width x Height 2130 x 746 x 1210 mm
Wheel Base 1465 mm
Tank Capacity 24 l
Unladen Weight, full Tank 220 kg
Max permissible Weight 398 kg
Ground Clearance 165 mm
Fuel Consumption 5,45 l/100 km [70 PS: 5,75 l] (at constant 90 kph)
Top Speed 200 kph
Acceleration 0-100 kph 4,7 sec (70 hp: 4,6 sec)
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