BMW R57
The 1929 BMW R57 is a stylish and Classic motorcycle with Air cooled, 494cc, OHV and 17.95 HP (13.2 kW) @ 4000 rpm.
Technical Specifications
Engine and transmission
- Engine type:2 cylinders, 4-stroke, Boxer
- Displacement:494 cc (30.18 cubic inches)
- Bore × stroke:2.68 inch × 2.68 inch (square)
- Cooling system:Air cooled
- Power:17.95 HP (13.2 kW) @ 4000 rpm
- Throttle:Cable operated
- Valve train:OHV, variable
- Valves per cylinder:2
- Sparks per cylinder:1
- Fuel supply system:Carburetor
- Funnel diameter:0.94 inch
- Compression:5.8:1
- 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
- Length:82.7 inch
- Width:31.5 inch
- Height:37.4 inch
- Wheel base:55.1 inch
- Curb weight:330.7 lbs
Chassis and suspension
- FrontSuspension:Leading linkBrake:Single Drum, Ø7.87 inchTire:3.5 × 26
- RearTire:3.5 × 26
- Frame type:steel, Double cradle frame
Other
- ABS available:No
- Power-to-weight ratio:0.09 KW/lbs (11.36 lbs/HP)
- Top speed:71.46 mph
- Fuel capacity:3.3 gals
- Number of riders:1 person
