Mbike - Catalogue. Community. Map.
Catalogue. Community. Map.
BMW R39 1925 
Air cooled, 247cc, Single, OHV
| Power: | 5.98 HP (4.4 kW) @ 4000 rpm |
| Final drive: | Shaft |
| Top speed: | 62.14 mph |
| Curb weight: | 242.5 lbs |
| Category: | Classic |
| Tags: | Classic bike, Naked |
|
Engine and transmission
|
|
| Engine type: | 1 cylinders, 4-stroke, Single |
| Displacement: | 247 cc (15.09 cubic inches) |
| Bore × stroke: | 2.68 inch × 2.68 inch (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: | 0.79 inch |
| 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: | 80.7 inch |
| Width: | 31.5 inch |
| Height: | 37.4 inch |
| Weight | |
| Curb weight: | 242.5 lbs |
|
Chassis and suspension
|
|
| Frame type: | steel, Double cradle frame |
| Front | |
| Suspension: | Leading link |
| Brake: | Single Drum, Ø5.91 inch |
| Tire: | 3.5 × 27 |
| Rear | |
| Tire: | 89 / R27 |
|
Other
|
|
| ABS available: | No |
| Power-to-weight ratio: | 0.04 KW/lbs (25.00 lbs/HP) |
| Top speed: | 62.14 mph |
| Fuel capacity: | 2.64 gals |
| Number of riders: | 2 persons |
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