BMW R 32   

  Dates:
  1923 - 1926

  Number sold:
  3,090

  Price:
  DM 2,200.-
  $424.- U.S.
  $5,319 in
  2009 dollars



Engine
Internal designation M 2 B 33
Type four-stroke two-cylinder flat twin (boxer)
Bore/stroke 68 x 68 mm
Cubic capacity 494 cm3 / 30 in.3
Maximum power 8.5 HP at 3,200 RPMs
Compression ratio 5.0 : 1
Valves per cylinder 2 SV
Carburetion system 1 carburettor Type BMW Spezial 22mm
Engine lubrication forced-feed lubrication
Oil pump gear pump
Power transmission
Clutch single discs, dry
Number of gears 3
Shifting manual
Gear ratios 2.27 / 1.50 / 1.08
Rear wheel ratio 4.41 : 1 (with sidecar 5.36 : 1)
Bevel/crown wheel 17 / 75 teeth (with sidecar 14 / 75)
Electrical system
Generator magneto generator (on request)
Ignition Bosch magneto ignition
Spark plugs Bosch W 145
Suspension
Designation R 32
Type of frame twin-loop, tubular
Front suspension twin cantilever spring
Rear suspension rigid (none)
Wheel rims 26 x 2.5
Tires front 26 x 3
Tires rear 26 x 3
Brakes front drum brake Ø 150 mm (1924 and on)
Brakes rear block brake
Dimensions and weights
Length x width x height 82.7 x 31.5 x 37.4 inches (2100 x 800 x 950 mm)
Wheel base 54.3 inches (1380 mm) with sidecar 1415 mm
Tank capacity 3.7 gals. (14 liters)
Unladen weight, full tank 269 lbs. / 122 kg
Permitted loading not available
Fuel consumption 78 MPG (± 3 liters / 100 km)
Oil consumption ± 6.2 quarts / 1000 miles (± 2.5 liters / 1000 km)
Top speed ± 60 MPH (± 96 km/h)

BMW R32 web page