1977 BMW R80/7
| 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 9.2:1 55 hp (40 KW) @ 7000 rpm or 50 hp (37 Kw) @ 7250 rpm 64 Nm / 47 ft lb @ 5500 rpm or 58 Nm / 42 ft lb @ 5500 rpm 2 constant depression carburettors, Bing 64/32/201 - 64/32/202 5-speed; Dog type gearbox (ratchet foot lever) Cardan Dry single plate, with diaphragm spring Battery ignition Electric starter Wet sump Bosch W 175 T 30 / Beru 175/14/3 A / Champion N10Y 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 2180 mm (85.82 inches) 746 mm (29.37 inches) 1080 mm (42.51 inches) 1465 mm (57.67 inches) 810 mm (31.90 inches) 165 mm (56.49 inches) 215 kg 24 litres Telescopic fork with hydraulic shock absorber Long swinging arm with strut 3.25 x R19S 4.00 x R18S Single disc brake 260 mm / 10.23 in diameter. ATE 1 piston caliper Simplex drum brake 200 mm / 7.87 in diameter |
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