Technical specifications
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| Model: |
Model 9 |
| Years: |
1924-27 |
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Engine:
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Single cylinder, OHV
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Capacity:
|
493 cc / 30.1 cu in
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Bore x Stroke:
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80 x 98 mm mm
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Cooling System:
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Air cooled
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Compression Ratio:
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6.5:1
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Lubrication:
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Dry sump
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Induction:
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AMAC carburettor
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Exhaust:
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Single
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Ignition:
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EIC Magneto
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Starting:
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Push
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Power:
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2.6 kW / 3.50 hp
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Transmission:
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3-Speed, medium ratio
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Gear Ratios:
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1st 10.3 / 2nd 6.9 / 3rd 4.6:1 Optional: 9.7, 6.5 and 4.3:1 or 11.0, 7.4 and 4.9:1 Side car: 11.8, 7.9 and 5.25:1 or 12.6, 8.4 and 5.6:1
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Final Drive:
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Chain
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Frame:
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Single front down tube
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Front Suspension:
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Druid forks
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Rear Suspension:
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Rigid, spring loaded saddle
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Front Brakes:
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Drum, internal expanding
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Rear Brakes:
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Drum, internal expanding
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Wheels:
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Steel, laced wire spokes
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Tyres, Front and Rear:
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3.25 x 26" (Optional: 3.50 x 26")
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Dimensions:
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Length: 2083 mm / 82.0" Width: 813 mm / 32.0"
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Wheelbase:
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1372 mm / 54 in
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Saddle Height:
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711 mm / 28.0"
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Fuel Capacity:
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11.4 L / 2.5 Imp gal / 3.0 US gal
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Oil Capacity:
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2.3 L / 4.0 Imp pt / 4.8 US gal
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Source:
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Marston-Sunbeam / Bonhams
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