BMW R 57 SPECIFICATIONS, PRICE & IMAGES
Bike Features
Make Model:
BMW R 57
Year:
1928 – 30
Engine:
Four
stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves
per cylinder.
Capacity:
494 cc / 30.1 cu in.
Bore x Stroke:
68 x 68 mm
Compression Ratio:
5.8:1
Induction:
1 x
Spezial two valve ∅24 mm carburetor
Ignition :
Bosch high voltage magneto ignition
Starting:
Kick
Clutch:
Single plate, dry
Max Power :
13.4 kW / 18 hp @ 4000 rpm
Transmission:
3 Speed
Final
Drive:
Shaft
Gear Ratio:
1st 2.83 / 2nd 1.55 / 3rd
1.08
Frame:
Twin loop steel tubular frame
Front Suspension:
Plate spring, 6 laminae
Rear Suspension:
Rigid
Front Brakes:
∅200mm Drum
Rear Brakes:
Block brake
Front Tyre:
26 x 3.5″ low pressure or 26 x 3.5″ high pressure
Rear Tyre:
26 x 3.5″ low pressure or 26 x 3.5″ high pressure
Wet-Weight:
150 kg / 330 lb
Fuel Capacity :
12.5 liters
/ 3.3 US gal