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1935 BMW R 12 technical specifications

BMW R 12 technical specifications

Technical specifications

Model: R 12
Years: 1935 - 42
Engine: Four stroke, two cylinder flat twin, SV
Capacity: 745
Bore x Stroke: 78 x 78 mm
Compression Ratio: 5.2:1
Cooling System: Air cooled
Induction: 2 x Amal 6/406/407  (Single Carburetor option: 1 x SUM type CK ∅25 mm)
Ignition: Magneto or battery ignition
Starting: Kick
Generator: Bosch D 245 RS 108
Clutch: Double plate dry clutch
Max Power: 14.9 kW / 20hp @ 4000 rpm   (Single Carburetor model: 13.4 kW / 18hp @ 3400 rpm)
Transmission: 4 Speed
Final Drive: Shaft
Gear Ratio: 1st 3.18 / 2nd 2.06 / 3rd 1.42 / 4th 1.09:1
Frame: Pressed steel twin loop frame
Front Suspension: Telescopic fork
Rear Suspension: Rigid, spring loaded saddle
Front Brake: ∅200mm Drum
Rear Brakes: ∅200mm Drum
Front Tyre: 3.00 x 19"
Rear Tyre: 3.50 x 19"
Wet-Weight: 185 kg / 408 lbs
Fuel Capacity : 14 L / 3.7 US gal

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