BMW R 80 RT

Visual Date 1982 - 1984

Number sold 7.315

Price 10.990,- DM

Engine

Type four-stroke, two-cylinder, horizontally-opposed "Boxer" engine, air-cooled
Bore/stroke 84,8 x 70,6 mm
Cubic capacity 797,5 cm3
Max power 50 PS (37kW) at 6500 rpm
Max torque 59 Nm at 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 V 64/32/305- 64/32/306
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 : 3,36
Bevel/crown wheel 11/ 37 teeth

 
Electrical system

Alternator Bosch 280 W
Ignition Contact-free electronic ignition (Bosch)
Starter Bosch 0,7 kW
Spark plugs W 7 D / Beru 14 - 7 D / Champion N 10 Y

 
Suspension

Type of frame double-loop tubular frame with bolt-on rear section
Front suspension telescopic fork with hydraulic shock absorber
Rear suspension BMW Monolever - swinging arm
Spring travel 200 / 125 mm
Rims front 2,15 B 19
Rims rear 2,50 B 18
Tyres front 3,25 H-19
Tyres rear 4,00 H-18
Brakes front single disc brake 260 mm
Brakes rear Simplex drum brake 200 mm

 
Dimensions and weights

Length x width x height 2210 x 746 x 1465 mm
Wheel base 1465 mm
Ground clearance 130 mm
Tank capacity 24 l
Unladen weight, full tank 235 kg
Max permissible weight 440 kg
Fuel consumption 5,5 l / 100 km (at constant 90 km/h)
Acceleration 0 - 100 km/h 7,1 s
Top speed 161 km/h