Technical specifications
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| Model: |
R 11 |
| Years: |
1929-34 |
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Engine:
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Four stroke, two cylinder flat twin, Side valve
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|
Capacity:
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745 cc / 45.5 cu in.
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Bore x Stroke:
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78 x 78 mm
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Compression Ratio:
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5.5:1
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Cooling System:
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Air cooled
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Induction:
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Single carburetor type BMW ∅24 mm (1933: 1 x carburetor type Amal 6/406 SP and 6/407 SP)
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Ignition:
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Magneto
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Starting:
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Kick
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Generator:
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Bosch Magneto generator D2L or Magneto Ignition FF2
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Clutch:
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Single plate dry clutch
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Max Power:
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13.4 kW / 18hp @ 3400 rpm ( 1933: 14.9 kW / 20hp @ 4400 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 2.83 / 2nd 1.55 / 3rd 1.08:1
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Frame:
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Twin loop pressed steel frame
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Front Suspension:
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Plate spring 9 laminae
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Rear Suspension:
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Rigid, spring loaded saddle
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Front Brake:
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∅200mm Drum
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Rear Brakes:
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∅37mm Cardan brake
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Wet-Weight:
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182 kg / 401 lbs
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Fuel Capacity:
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14 L / 3.7 US gal
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