Technical specifications
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| Model: |
R 20 |
| Years: |
1938-40 |
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Engine:
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Four stroke, single cylinder, pushrod operated, OHV, 2 valves per cylinder.
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Capacity:
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192 cc / 11.7 cu in.
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Bore x Stroke:
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68 x 68 mm
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Compression Ratio:
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6.0:1
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Cooling System:
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Air cooled
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Induction:
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1 x Amal push in carburetor M 74/428
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Ignition:
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Battery ignition
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Starting:
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Kick
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Clutch:
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Single plate, dry
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Max Power:
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6 kW / 8 hp @ 5400 rpm
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Transmission:
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3 Speed
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Final Drive:
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Shaft
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Gear Ratio:
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1st 4.55 / 2nd 2.58 / 3rd 1.64:1
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Frame:
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Twin loop frame, bolted
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Front Suspension:
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Telescopic fork
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Rear Suspension:
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Rigid, spring loaded saddle
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Front Brake:
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∅160mm Drum
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Rear Brakes:
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∅180mm Drum
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Front Tyre:
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3.00 x 19"
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Rear Tyre:
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3.00 x 19"
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Wet-Weight:
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130 kg / 296 lb
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Fuel Capacity:
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12 L / 3.2 US gal
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