BMW R 850 R

BMW R 850 R Date 1994

Number sold 11.212 (31.12.1997)

Price 15.500,- DM

Engine

Type four-stroke, two-cylinder, horizontally-opposed "Boxer" engine, air-cooled
Bore/stroke 87,8 x 70,5 mm
Cubic capacity 848 cm3
Max power 70 PS (52 kW) at 7000 rpm [34 PS (25 kW) at 5000 rpm]
Max torque 77 Nm at 5000 rpm [60 Nm at 2500 rpm]
Compression ratio 10,3 : 1
Valves per cylinder 4
Valve control ohv, using chain drive, cup tappets, push rod and rocker arm
Carburation system electronic injection, Bosch Motronic MA 2.2
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 4,16 / 2,91 / 2,13 / 1,74 / 1,45 :1
Rear wheel ratio 1 : 3,36
Bevel/crown wheel 11 : 37 teeth

 
Electrical system

Alternator 12 V / 700 W
Ignition electronic ignition Bosch Motronic MA 2.2
Starter 1,1 kW
Spark plugs Bosch FR5 DTC

 
Suspension

Type of frame 3-part tubular space frame, engine serving as load-bearing component
Front suspension BMW Telelever - fork with longitudinal control arm and central strut
Rear suspension BMW Paralever - swinging arm
Spring travel 120 / 135 mm
Rims front 3,50 x 19 or BMW cross-spoke wheels 2,50 x 18
Rims rear 4,50 x 17 or BMW cross-spoke wheels 4,00 x 17
Tyres front 120/70 - ZR 17, BMW cross-spoke 110/80 ZR 18
Tyres rear 160/60 - ZR 18, BMW cross-spoke 150/70 ZR 17
Brakes front dual-disc brake 305 mm
Brakes rear single disc brake 276 mm

 
Dimensions and weights

Length x width x height 2197 x 898 x 1060 mm
Wheel base 1487 mm
Ground clearance 138 mm
Tank capacity 21 l
Unladen weight, full tank 235 kg
Max permissible weight 450 kg
Fuel consumption 4,6 l / 100 km (at constant 90 km/h)
Acceleration 0 - 100 km/h 5,0 s
Top speed 187 km/h