Moto-Data

BMW R 51 (1938-40) technical specifications

BMW R 51 technical specifications

BMW R 51 is produced in 1938-40. Engine is Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder., displacement 494 cc / 30.1 cu in. , produces power 18 kW / 24 hp @ 5800 rpm. BMW R 51 wet weight is 182 kg / 400 lbs. BMW R 51 has 2 photos.

Technical specifications

+ Add to 'Compare list'
Model: R 51
Years: 1938-40
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: 6.7:1
Cooling System: Air cooled
Induction: 2 x Amal 5/423 carburetors
Ignition: Battery ignition
Starting: Kick
Clutch: Single plate, dry
Max Power: 18 kW / 24 hp @ 5800 rpm
Transmission: 4 Speed
Final Drive: Shaft
Gear Ratio: 1st 3.60 / 2nd 2.28 / 3rd 1.70 / 4th 1.30:1
Frame: Closed double loop steel tubular frame
Front Suspension: Telescopic fork
Rear Suspension: Long swing arm with suspension units and oil pressure shock absorbers
Front Brakes: ∅200mm Drum, duplex full hub
Rear Brakes: ∅200mm Drum, simplex full hub
Front Tyre: 3.50 -19"
Rear Tyre: 3.50 -19"
Wet-Weight: 182 kg / 400 lbs
Fuel Capacity: 14 liters / 3.60 US gal

Riders reviews


No riders reviews. Be the first to review this bike.
BMW motorcycles Back to BMW motorcycles