Model: R 80 R
Production  
Engine  
Power transmission  
Electrical System  
Chassis  
Dimensions/Weights  
     
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Production
Begin of Production   1992
End of Production   1994
Number Sold   3.593
Price   13.250,- 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   50 hp (37 KW) at 6500 rpm [34 hp (25 KW) 6000 rpm or 27 hp (20 KW) 5500 rpm]
Max Torque   61 Nm [50 Nm or 45 Nm] at 3750 rpm [3750 rpm or 3500 rpm]
Compression Ratio   8.2 : 1
Valves per Cylinder   2
Valve Control   ohv, using push rod and rocker arm
Carburation System   2 constant depression carburettors, Bing 64/32/349-64/32/350
Engine Lubrication   wet sump
Power Transmission
Clutch   dry single plate, with lever-action 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 : 3.20
Bevel / Crownwheel   10 / 32 teeth
Electrical System
Ignition   Contact-free electronic ignition (Bosch)
Alternator   Bosch 240 W
Starter   Bosch 0.7 kW
Spark Plugs   Bosch W 7 DC/Beru 14-7 DU
Chassis
Type of Frame   double-loop tubular frame with bolt-on rear section
Front Suspension   telescopic fork with hydraulic shock absorber
Rear Suspension   BMW Paralever swinging arm
Spring Travel front/rear   135 / 135 mm
Rims front   2.50-18 MTH 2
Rims rear   2.50-17 MTH 2
Tyres front   110/80-V18
Tyres rear   140/80-V17
Brakes front   single disc brake 285 mm dia
Brakes rear   simplex drum brake 200 mm dia
Dimensions/Weights
Length x Width x Height   2210 x 1000 x 1190 mm
Wheel Base   1495 mm
Tank Capacity   24 l
Unladen Weight, full Tank   217 kg
Max permissible Weight   420 kg
Ground Clearance   200 mm
Fuel Consumption   4,7 l/100 km [4,5 l/100 km] (at constant 90 kph)
Top Speed   168 kph [148 kph resp. 145 kph]
Acceleration 0-100 kph   6,0 sec [8,6 sec resp. 9,5 sec]