74. BMW R51 1938-1954 Rp 13.000.000
Engine type: 2 cylinders, 4-stroke, Boxer
Displacement: 494 cc (30.18 cubic inches)
Bore × stroke: 68 mm × 68 mm (square)
Cooling system: Air cooled
Power: 24.07 HP (17.7 kW) @ 5600 rpm
Throttle: Cable operated
Valves
Valve train: OHV, variable
Valves per cylinder: 2
Fuel and ignition
Sparks per cylinder: 1
Fuel supply system: Carburetor
Compression: 6.7:1
Engine mounting: Longitudinal
Lubrication system: Wet sump
Gear box: Manual 4-speed
Clutch: Dry, single plate, cable operated
Final drive: Shaft
Spark plug pipe type: Bosch, W 225 T1
Starter: Kick-starter
Dimensions
Physical measures
Length: 2130 mm
Width: 815 mm
Height: 960 mm
Wheel base: 1400 mm
Weight
Curb weight: 182 kg
75. BMW R52 1928-1929 Rp 11.000.000
Engine type: 2 cylinders, 4-stroke, Boxer
Displacement: 486 cc (29.69 cubic inches)
Bore × stroke: 63 mm × 78 mm (undersquare - longstroke)
Cooling system: Air cooled
Power: 11.96 HP (8.8 kW) @ 3400 rpm
Throttle: Cable operated
Valves
Valve train: OHV, variable
Valves per cylinder: 2
Fuel and ignition
Sparks per cylinder: 1
Fuel supply system: Carburetor
Funnel diameter: 22 mm
Compression: 5:1
Engine mounting: Longitudinal
Lubrication system: Wet sump
Gear box: Manual 3-speed
Clutch: Dry, single plate, cable operated
Final drive: Shaft
Spark plug pipe type: Bosch, W 175
Starter: Kick-starter
Dimensions
Physical measures
Length: 2100 mm
Width: 800 mm
Height: 950 mm
Wheel base: 1400 mm
Weight
Curb weight: 152 kg
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