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