1938 BMW R61
| 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 Battery Gear ratios | Air-cooled, Four-stroke two cylinder flat twin 70.0 x 78.0 mm (2.75 x 3.07 inches) 600 cc SV 5.7:1 18 hp @ 4800 rpm 2 x carburettor type Amal M75/426 S 4-speed (foot shifting) Cardan Single plate saucer spring, dry Battery ignition Kick starter Forced feed lubrication Bosch W 175 T1 6 volt 12 amp hour |
| 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) | Twin loop steel tubular frame 2130 mm (83.85 inches) 815 mm (32.08 inches) 960 mm (37.79 inches) 1400mm (55.10 inches) 850 mm (33.50 inches) 165 mm (6.49 inches) 184 kg 14 litres Telescopic fork Telescopic suspension 3.50 R19 3.50 R19 Drum brake 200 mm / 7.87 in diameter Drum brake 200 mm / 7.87 in diameter |
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