Technical specifications
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| Model: |
R 51/2 |
| Years: |
1950-51 |
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Engine:
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Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder.
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Capacity:
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494 cc / 30.1 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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6.4:1
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Cooling System:
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Air cooled
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Induction:
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2 x Bing Spezial 1/22/29 and 1/22/30 carburetors
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Ignition:
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Bosch coil with manual advance by the handlebar lever
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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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18 kW / 24 hp @ 5800 rpm
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Transmission:
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4 Speed
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Final Drive:
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Shaft
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Gear Ratio:
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1st 3.60 / 2nd 2.28 / 3rd 1.70 / 4th 1.30:1
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Frame:
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Closed double loop steel tubular frame
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Front Suspension:
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Telescopic fork
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Rear Suspension:
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Spring with coil compression springs and rubber deflection stops
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Front Brakes:
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∅200mm Drum, duplex full hub
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Rear Brakes:
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∅200mm Drum, simplex full hub
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Front Tyre:
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3.50 -19" Metzeler
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Rear Tyre:
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3.50 -19" Metzeler
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Wet-Weight:
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185 kg / 407 lbs
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Fuel Capacity:
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14 liters / 3.60 US gal
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