BMW R47 (1927-28)

Make Model: BMW R 47


Year: 1927 – 28
Engine: Four stroke, two cylinder horizontally opposed Boxer, pushrod operated, OHV
Capacity: 494 cc / 30.1 cu in.
Bore x Stroke: 68 x 68 mm
Compression Ratio: 5.8:1
Cooling System: Air cooled
Induction: 1 x BMW Spezial 2 valve 22 mm carburetor
Ignition: Bosch magneto ignition
Starting: Kick
Clutch: Single plate saucer spring, dry
Max Power: 13.2 kW / 18 hp @ 4000 rpm
Transmission: 3 Speed
Final Drive: Shaft
Gear Ratio: 1st 2.50 / 2nd 1.50 / 3rd 1.07:1
Frame: Twin loop steel tubular frame
Front Suspension: Plate spring, 5 laminae
Rear Suspension: Rigid, Spring loaded saddle
Front Brakes: 150mm Drum
Rear Brakes: External shoe brake at the gearing on Cardan shaft
Front Tyre: 27 x 3.5″ low pressure or 26 x 3.0″ high pressure

Rear Tyre: 27 x 3.5″ low pressure or 26 x 3.0″ high pressure
Wet-Weight: 130 kg / 286 lbs
Fuel Capacity: 14 liters / 3.6 US gal

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