Technical specifications
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| Model: |
YDS-7 |
| Years: |
1972 |
|
Engine:
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Two stroke, piston-port, parallel twin
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|
Capacity:
|
247 cc / 15.0 cu-in
|
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Bore x Stroke:
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54 x 54 mm
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Compression Ratio:
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7.5;1
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Cooling System:
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Air-cooled
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Induction:
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26mm Mikuni
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Ignition:
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Mitsubishi contact breaker
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Starting:
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Kick
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Max Power:
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30 hp @7500 rpm
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Max Torque:
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21 ftlb @ 7000 rpm
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Clutch:
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Wet, multi-plate clutch mounted on left side of crankshaft
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Transmission:
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5 Speed Helical-gear primary drive. Rear chain % x %in with top guard. Engine rpm at 30 mph in top gear, approximately 2,500.
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Final Drive:
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Chain
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Front Suspension:
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34mm Telescopic forks
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Rear Suspension:
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Twin shock
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Front Brakes:
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180mm twin leading shoe drum
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Rear Brakes:
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180mm single leading shoe
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Front Tyre:
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300 x 18
|
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Rear Tyre:
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3.25 x 18
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Wheelbase:
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1300 mm / 51.1 in
|
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Wet Weight:
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145 kg / 320 lbs
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Fuel Capacity:
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11.4 Litres / 3.0 gal
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