1984 BMW R80RT Mono
| Engine Engine type Bore x Stroke Displacement Valves Compression ratio Max Power Max Torque Fuel system Transmission Final drive Clutch Ignition type Starting system Lubrication Exhaust Spark plug Generator Gear ratios | Four-stroke two cylinder horizontally opposed "Boxer" engine, air cooled 84.8 x 70.6 mm (3.33 x 2.77 inches) 797.5 cc 2 valves per cylinder; OHV, using push rod and rocker arm 8.2:1 50 hp (37 KW) @ 6500 rpm 58 Nm / 42 ft lb @ 4000 rpm 2 constant depression carburettors, Bing V 64/32/353 - 64/32/354 5-speed; Dog type gearbox (ratchet foot lever) Cardan Dry single plate, with lever action diaphragm spring Contact free electronic ignition (Bosch) Electric starter Wet sump Bosch W 7 D / Beru14-7D / Champion N9Y Bosch 12 V/280 W 4.4 / 2.86 / 2.07 / 1.67 / 1.50 |
| Dimensions Frame type Castor Overall length Overall width Overall height Wheelbase Seat height Ground clearance Dry weight Fuel capacity Colors Suspension (front) Suspension (rear) Tyre (front) Tyre (rear) Brake (front) Brake (rear) | Double loop tubular frame with bolt on rear section 2175 mm (85.62 inches) 960 mm (37.79 inches) 1478 mm (58.18 inches) 1447 mm (56.96 inches) 807 mm (31.80 inches) 140 mm (5.51 inches) 227 kg 22 litres Telescopic fork with hydraulic shock absorber BMW monolever swinging arm 90/90 R18 51 H 120/90 R18 65 H Single or twin disc brake 285 mm / 11.22 inch diameter. Brembo 2 piston caliper Simplex drum brake 200 mm / 7.87 in diameter |
Image: http://www.bmbikes.co.uk/mechanicalpages/rseriesmechanical.htm