Mbike - Catalogue. Community. Map.
Catalogue. Community. Map.
Jawa 90 1970 
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Engine and transmission
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| Engine type: | 1 cylinders, 2-stroke, Single |
| Displacement: | 89 cc (5.44 cubic inches) |
| Bore × stroke: | 1.89 inch × 1.93 inch (square) |
| Cooling system: | Air cooled |
| Power: | 9.38 HP (6.9 kW) @ 6500 rpm |
| Throttle: | Cable operated |
| Valves | |
| Valve train: | Piston controlled inlet port, variable |
| Fuel and ignition | |
| Sparks per cylinder: | 1 |
| Fuel supply system: | Carburetor |
| Ignition type: | mechanically timed |
| Compression: | 8.5:1 |
| Engine mounting: | Transverse |
| Gear box: | Manual 5-speed |
| Clutch: | Wet, multiple discs, cable operated |
| Final drive: | Chain |
| Spark plug pipe type: | Champion |
| Motor oil: | Mineral, 2T |
| Starter: | Kick-starter |
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Dimensions
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| Weight | |
| Curb weight: | 198.4 lbs |
| Dry weight: | 174.2 lbs |
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Chassis and suspension
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| Frame type: | steel, Backbone frame |
| Front | |
| Suspension: | Cartridge |
| Suspension travel: | 6.5 inch |
| Brake: | Single Drum |
| Tire: | 63 / 100 R18 |
| Tire pressure: | 0.1 PSI |
| Rear | |
| Suspension: | twin shock, Swingarm |
| Suspension travel: | 4.72 inch |
| Brake: | Drum |
| Tire: | 70 / 100 R18 |
| Tire pressure: | 0.1 PSI |
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Other
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| ABS available: | No |
| Power-to-weight ratio: | 0.08 KW/lbs (13.04 lbs/HP) |
| Top speed: | 59.03 mph |
| Fuel capacity: | 2.77 gals |
| Number of riders: | 2 persons |
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