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BMW R 11

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Make Model

BMW R 11

Year

1929-34

Engine

Four stroke, two cylinder flat twin, Side valve

Capacity

745 cc / 45.5 cu in.
Bore x Stroke 78 x 78 mm
Compression Ratio 5.5:1
Cooling System Air cooled

Induction

Single carburetor type BMW ∅24 mm   (1933: 1 x carburetor type Amal 6/406 SP and 6/407 SP)

Ignition

Magneto

Starting

Kick

Generator

Bosch Magneto generator D2L or Magneto Ignition FF2

Clutch Single plate dry clutch

Max Power

13.4 kW / 18hp @ 3400 rpm  ( 1933: 14.9 kW / 20hp @ 4400 rpm)

Transmission

3 Speed

Final Drive

Shaft
Gear Ratio 1st 2.83 / 2nd 1.55 / 3rd 1.08:1
Frame

Twin loop pressed steel frame

Front Suspension

Plate spring 9 laminae

Rear Suspension Rigid, spring loaded saddle
Front Brake 200mm Drum

Rear Brakes

37mm Cardan brake

Wet-Weight

182 kg / 401 lbs

Fuel Capacity 

14 L / 3.7 US gal
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