Technical specifications
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Model: |
Model 31 650 |
Years: |
1957-66 |
Engine:
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Four stroke, pushrod parallel twin, OHV, 2 valves per cylinder,
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Capacity:
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646 cc / 39.4 cu in
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Bore x Stroke:
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72 x 79.3 mm
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Compression Ratio:
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7.5 : 1
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Cooling System:
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Air cooled
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Induction:
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Carburetor
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Ignition:
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6 V (After 1964 12 V) Magnet (Lucas K2F)
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Starting:
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Kick
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Clutch:
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Multi Plate (dry, Burman)
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Max Power:
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31,4 kW / 43 hp @ 6000 rpm
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Transmission:
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4 Speed
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Final Drive:
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Chain
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Frame:
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Single cradle
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Front Suspension:
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Hydraulic telescopic fork
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Rear Suspension:
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Dual chocks
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Front Brakes:
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Drum
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Rear Brakes:
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Drum
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Wheels:
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Steel, wire spokes
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Front Tyre:
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3.25 -19
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Rear Tyre:
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3.50 -19
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Dry Weight:
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176 kg / 388 lbs
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Fuel Capacity:
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16 L / 4.2 US gal
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