Technical specifications
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| Model: |
S8 500 |
| Years: |
1949-56 |
|
Production:
|
8 530 units
|
|
Engine:
|
Parallel twin, SOHC
|
|
Capacity:
|
487 cc / 29.7 cu in
|
|
Bore x Stroke:
|
70 x 63.5 mm
|
|
Compression Ratio:
|
6.5:1
|
|
Cooling System:
|
Air/Oil cooled
|
|
Lubrication:
|
Wet sump
|
|
Starting:
|
Kick
|
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Electrical system:
|
6V
|
|
Max Power:
|
18.6 kW / 25 hp @ 6000 rpm
|
|
Clutch:
|
Single plate, dry
|
|
Transmission:
|
4-Speed
|
|
Final Drive:
|
Shaft
|
|
Frame:
|
Twin cradle, steel
|
|
Front Suspension:
|
Telescopic, one way damped
|
|
Rear Suspension:
|
Plunger, spring loaded saddle
|
|
Front Brakes:
|
Drum, leading shoe, 203 mm / 8"
|
|
Rear Brakes:
|
Drum, leading shoe, 203 mm / 8"
|
|
Wheel, Front:
|
4.50 x 16"
|
|
Wheel, Rear:
|
4.75 x 16"
|
|
Tyres, Front:
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4JA x 16"
|
|
Tyres, Rear:
|
43A x 16"
|
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Wheelbase:
|
1400 mm / 57"
|
|
Dry Weight:
|
187 kg / 413 lbs
|
|
Top Speed:
|
121 km/h / 75 mph
|
|
Source:
|
Sump Publishing
|