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R45

R 45
. Data sheet
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Production
Begin of Production 1978
End of Production 1985
Number Sold 28.158
Price 5.880,- DM
Engine
Motor Type four-stroke, two-cylinder, horizontally-opposed "Boxer" engine, air-cooled
Bore x Stroke 70 x 61,5 mm
Cubic Capacity 473,4 ccm
Max Power 35 hp (26 KW) [27 hp (20 KW)] at 7250 rpm [6500 rpm]
Max Torque 37,5 Nm [31,3 Nm] at 5500 rpm [5000 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 64/28/303-304 [Bing 64/26/303-304]
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
Rear Wheel Ratio 1 : 3.89 [1 : 4.25]
Bevel / Crownwheel 9 / 35 teeth [8 / 34 teeth]
Electrical system
Ignition battery ignition
Alternator Bosch 280 W
Starter Bosch 0.7 kW
Spark Plugs Bosch W 5 D/Beru 14-5D/Champion N 6 Y [Bosch W 7 D/Beru 14-7 D/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 175 / 110 mm
Rims front 1.85 B 18
Rims rear 2.50 B 18
Tyres front 3.25 S 18
Tyres rear 4.00 S 18
Brakes front single disc brake 260 mm dia
Brakes rear simplex drum brake 200 mm dia
Dimensions / Weights
Length x Width x Height 2110 x 688 x 1080 mm
Wheel Base 1400 mm
Tank Capacity 22 l
Unladen Weight, full Tank 205 kg
Max permissible Weight 398 kg
Ground Clearance 130 mm
Fuel Consumption 5,5 l/100 km [5,0 l/100 km] (at constant 90 kph)
Top Speed 160 kph [145 kph]
Acceleration 0-100 kph 7,4 sec [8,5 sec]
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