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BMW R 2 Series 1 1931 — Specs & Overview
Specifications and model details
The BMW R 2 Series 1 is a other motorcycle produced between 1931. Developed by BMW from DE, it represents the other class and carries the characteristics typical of its production period.
Fuel capacity
11.00 litres (2.91 US gallons)
Key features
Expanding brake (drum brake)
Technical specifications
Engine
Engine type
Single cylinder, four-stroke
Engine details
M 67
Compression
6.7:1
Bore x stroke
63.0 x 64.0 mm (2.5 x 2.5 inches)
Fuel system
Carburettor. Sum carburettor 19 mm
Fuel control
Overhead Valves (OHV)
Lubrication system
Forced-feed lubrication
Cooling system
Air
Transmission
Gearbox
3-speed
Transmission type
Shaft drive (cardan) (final drive)
Clutch
Single-plate, dry
Chassis
Frame type
Pressed steel duplex frame
Front suspension
Cantilever spring, 9 laminae
Rear suspension
Rigit
Front tire
3.00-25
Rear tire
3.00-25
Front brakes
Expanding brake (drum brake)
Front brakes diameter
180 mm (7.1 inches)
Rear brakes
Expanding brake (drum brake)
Rear brakes diameter
180 mm (7.1 inches)
Wheelbase
1320 mm (52.0 inches)
Dimensions & weight
Dry weight
122.0 kg (269.0 pounds)
Power/weight ratio
0.0492 HP/kg
Overall length
1950 mm (76.8 inches)
Fuel capacity
11.00 litres (2.91 US gallons)
Other
Model name
BMW R 2 Series 1
Model year
1931
Category
Classic
Rating
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Displacement
198.0 ccm (12.08 cubic inches)
Power output
6.0 HP (4.4 kW)) @ 3500 RPM
Ignition
Battery ignition
Greenhouse gases
63.8 CO2 g/km. (CO2 - Carbon dioxide emission)
Performance
Top speed
95.0 km/h (59.0 mph)
Fuel consumption
2.75 litres/100 km (36.4 km/l or 85.53 mpg)