Model: R 75 /7
Production  
Engine  
Power transmission  
Electrical System  
Chassis  
Dimensions/Weights  
     
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Production
Begin of Production   1976
End of Production   1977
Number Sold   6.264
Price   7.985,- DM
Engine
Motor Type   four-stroke, two-cylinder, horizontally-opposed "Boxer" engine, air-cooled
Bore x Stroke   82 x 70,6 mm
Cubic Capacity   745 ccm
Max Power   50 hp (36,8 KW) at 6200 rpm
Max Torque   58,8 Nm at 5000 rpm
Compression Ratio   9.0 : 1
Valves per Cylinder   2
Valve Control   ohv, using push rod and rocker arm
Carburation System   2 constant depression carburettors, Bing 64/32/13-64/32/14
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 0.6 hp
Spark Plugs   Bosch W 200 T 30/Beru 200/14/3 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 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 S 19
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   2130 x 746 x 1080 mm
Wheel Base   1465 mm
Tank Capacity   24 l
Unladen Weight, full Tank   215 kg
Max permissible Weight   398 kg
Ground Clearance   165 mm
Fuel Consumption   4,5 l/100 km (at constant 90 kph)
Top Speed   177 kph
Acceleration 0-100 kph   6,7 sec