1950 BMW R51 2

1950 BMW R51 2 Specifications

  • Updated: 2023-03-20

General information

ModelBMW R51 2

Engine and transmission

Displacement494.0 ccm (30.14 cubic inches)
Engine typeTwo cylinder boxer, four-stroke
Power24.1 HP (17.6 kW) @ 5600 RPM
Top speed135.0 km/h (83.9 mph)
Bore x stroke68.0 x 68.0 mm (2.7 x 2.7 inches)
Fuel systemCarburettor. Bing 22mm
Fuel controlOverhead Valves (OHV)
Lubrication systemWet sump
Cooling systemAir
Transmission typeShaft drive (cardan) (final drive)
ClutchDry-single plate-cable operated
Fuel consumption4.10 litres/100 km (24.4 km/l or 57.37 mpg)
Greenhouse gases95.1 CO2 g/km. (CO2 - Carbon dioxide emission)

Chassis, suspension, brakes and wheels

Frame typeSteel single cradle
Front suspensionCartridge
Rear suspensionTwin shock-Swingarm
Front tire3.50-19.00
Rear tire3.50-19.00
Front brakesExpanding brake (drum brake). Half hub
Diameter200 mm (7.9 inches)
Rear brakesExpanding brake (drum brake). Half hub
Diameter200 mm (7.9 inches)
SeatSolo seat with springs
Weight incl. oil, gas, etc185.0 kg (407.9 pounds)
Overall height720 mm (28.3 inches)
Overall length2130 mm (83.9 inches)
Overall width815 mm (32.1 inches)
Ground clearance120 mm (4.7 inches)
Wheelbase1400 mm (55.1 inches)
Fuel capacity14.00 litres (3.70 US gallons)
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