Technical specifications
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| Model: |
R 37 |
| Years: |
1925-27 |
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Engine:
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Four stroke, two cylinder horizontally opposed Boxer, pushrod operated, OHV
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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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6.2:1
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Cooling System:
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Air cooled
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Induction:
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1 x BMW Spezial three valve ∅26 mm
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Ignition:
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Bosch magneto ignition
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Starting:
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Kick
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Clutch:
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Single plate saucer spring, dry
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Max Power:
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11.9 kW / 16 hp @ 4000 rpm
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Transmission / Drive:
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3 Speed
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Gear Ratio:
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1st 2.50 / 2nd 1.50 / 3rd 1.08:1
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Frame:
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Twin loop tubular frame
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Front Suspension:
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Twin cantilever spring
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Rear Suspension:
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Rigid, spring loaded saddle
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Front Brakes:
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∅150mm Drum
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Rear Brakes:
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Block brake
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Front Tyre:
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26 x 3.00"
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Rear Tyre:
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26 x 3.00"
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Wet-Weight:
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134 kg / 295 lbs
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Fuel Capacity:
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14 liters / 3.6 USgal
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