68. BMW R37 1925-1926 Rp 12.000.000
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: 16.04 HP (11.8 kW) @ 4000 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: 26 mm
Compression: 6.2:1
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
69. BMW R39 1925-1927 Rp 12.000.000
Engine type: 1 cylinders, 4-stroke, Single
Displacement: 247 cc (15.09 cubic inches)
Bore × stroke: 68 mm × 68 mm (square)
Cooling system: Air cooled
Power: 5.98 HP (4.4 kW) @ 4000 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: 20 mm
Compression: 6:1
Engine mounting: Vertical
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: 2050 mm
Width: 800 mm
Height: 950 mm
Weight
Curb weight: 110 kg
Chassis and suspension
Frame type: steel, Double cradle frame
Front
Suspension: Leading link
Brake: Single Drum, Ø150 mm
Tire: 3.5 × 27
Rear
Tire: 89 / R27
Other
ABS available: No
Power-to-weight ratio: 0.04 HP/kg (25.00 kg/HP)
Top speed: 100 km/h
Fuel capacity: 10 l
Number of riders: 2 persons
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