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R 80 /7

R 80/7
. Data sheet
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Production
Begin of Production 1977
End of Production 1984
Number Sold 18.522
Price 7.990,- DM
Engine
Motor Type four-stroke, two-cylinder, horizontally-opposed "Boxer" engine, air-cooled
Bore x Stroke 84,8 x 70,6 mm
Cubic Capacity 797,5 ccm
Max Power 55 hp (40 KW) [50 hp (37 KW)] at 7000 rpm [7250 rpm]
Max Torque 64 Nm [58 Nm] at 5500 rpm [5500 rpm]
Compression Ratio 9.2 : 1 [8.2 : 1]
Valves per Cylinder 2
Valve Control ohv, using push rod and rocker arm
Carburation System 2 constant depression carburettors, Bing 64/32/201-64/32/202
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 : 3.20 or 1 : 3.36
Bevel / Crownwheel 10 / 32 teeth or 11 / 37 teeth
Electrical system
Ignition battery ignition
Alternator Bosch 12 V/280 W
Starter Bosch 0.7 kW
Spark Plugs Bosch W 175 T 30/Beru 175/14/3 A/Champion N 10 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 2.50 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
Dimensions / Weights
Length x Width x Height 2180 (from 1978: 2210) x 746 x 1080 mm
Wheel Base 1465 mm
Tank Capacity 24 l
UnladenWeight, full Tank 215 kg
Max permissible Weight 398 kg
Ground Clearance 165 mm
Fuel Consumption 4,75 l/100 km [5,0l /100 km] (at constant 90 kph)
Top Speed 180 kph [170 kph]
Acceleration 0-100 kph 5,9 sec [6,4 sec]
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