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R 50/5
   
. Data sheet
. Back to Models
Production
Begin of Production   1969
End of Production   1973
Number Sold   7.865
Price   3.696,- DM
Engine
Motor Type   four-stroke, two-cylinder, horizontally-opposed "Boxer" engine, air-cooled
Bore x Stroke   67 x 70,6 mm
Cubic Capacity   498 ccm
Max Power   32 hp (23,6 KW) at 6400 rpm
Max Torque   39 Nm at 5000 rpm
Compression Ratio   8.6 : 1
Valves per Cylinder   2
Valve Control   ohv, using push rod and rocker arm
Carburation System   2 slide carburettors, Bing 1/26/113-1/26/114
Engine Lubrication   wet sump
Power transmission
Clutch   dry single plate, with diaphragm spring
Number of Gears   4
Gear Selection   dog-type gearbox (ratchet foot lever)
Gear Ratios   3.896 / 2.578 / 1.875 / 1.50 :1
Rear Wheel Ratio   1 : 3.56
Bevel / Crownwheel   9 / 32 teeth
Electrical system
Ignition   battery ignition
Alternator   Bosch 12 V/180 W
Starter   Bosch 0.5 hp (optional at additional charge)
Spark Plugs   Bosch W 230 T 30/Beru 230/14/3 A/Champion N 7 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 strut
Spring Travel front/rear   208 / 125 mm
Rims front   1.85 B 19
Rims rear   1.85 B 18 or 2.15 B 18
Tyres front   3.25 S 19
Tyres rear   4.00 S 18
Brakes front   duplex drum brake 200 mm dia
Brakes rear   simplex drum brake 200 mm dia
Dimensions / Weights
Length x Width x Height   2100 (from 1973: 2150) x 850 (850) x 1040 mm
Wheel Base   1385 mm (from 1973: 1435 mm)
Tank Capacity   24 l (from 1971: 17 l)
Unladen Weight, full Tank   205 kg (from 1971: 200 kg)
Max permissible Weight   398 kg
Ground Clearance   165 mm
Fuel Consumption   4,6 l/100 km (at constant 90 kph)
Top Speed   157 kph
Acceleration 0-100 kph   10,2 sec