Jawa 638 (1994)
Comparison technical specifications
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| Make: | Jawa |
| Model: | 638 |
| Years: | 1994 |
| Engine: | Two stroke, parallel twin |
| Capacity: | 343.4 cc / 21.0 cu in |
| Bore x Stroke: | 58 x 65 mm |
| Compression Ratio: | 9.8:1 |
| Cooling System: | Air cooled |
| Induction: | Jikov 28-29 CE horizontal carburetor, slide type |
| Ignition: | Magneto VAPE A67 contactless |
| Battery: | 12V, 6Ah |
| Starting: | Kick |
| Max Power: | 17.2 kW / 23.5 hp @ 5250 rpm |
| Max Torque: | 31.4 Nm / 3.2 kgf-m / 23.2 ft.lb @ 4750 rpm |
| Clutch: | Multi disc in oil bath |
| Transmission: | 4 Speed |
| Final Drive: | Chain |
| Gear Ratios: | 1st 14.50 / 2nd 8.60 / 3rd 6.10 / 4th 4:96:1 |
| Frame: | Tubular, double, closed |
| Front Suspension: | Hydraulic telescopic fork, steel spiral springs |
| Front Wheel Travel: | 150 mm / 5.9 in |
| Rear Suspension: | Swingarm, hydraulic telescopic in suspension units, spiral springs |
| Rear Wheel Travel: | 80 mm / 3.1 in |
| Front Brakes: | Ø265 mm Disc, hydraulic control |
| Rear Brakes: | Ø165 mm Drum, mechanical control |
| Wheels: | Steel, deepened profile, multi-spokes |
| Front Wheel: | 2.15 B x 18" |
| Rear Tyre: | 2.15 B x 18" |
| Dimensions: | Length: 2100 mm / 82.7 in Width: 780 mm / 30.7 in Height: 1160 mm / 45.7 in |
| Wheelbase: | 1370 mm / 53.9 in |
| Ground Clearance: | 120 mm / 4.7 in |
| Seat Height: | 820 mm / 32.3 in |
| Turning Radius: | 3.5 m / 11.5 ft |
| Dry Weight: | 149 kg / 328 lbs |
| Wet Weight: | 162 kg / 357 lbs |
| GVWR: | 342 kg / 754 lbs |
| Fuel Capacity: | 17 L / 4.5 US gal |
| Fuel Reserve: | 2.8 L / 0.74 US gal |