Sunbeam Model 9
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| Sunbeam Model 9 | |
| Manufacturer | |
|---|---|
| Production | 1924 - 27 |
| Engine | Single cylinder, OHV |
| Compression ratio | 6.5:1 |
| Horsepower | 2.6 kW / 3.50 hp |
| Ignition | EIC Magneto |
| Transmission | 3-Speed, medium ratio |
| Frame | Single front down tube |
| Suspension | Front: Druid forks Rear: Rigid, spring loaded saddle |
| Brakes | Front: Drum, internal expanding Rear: Drum, internal expanding |
| Wheelbase | 1372 mm / 54 in |
| Weight | |
| Oil Capacity | 2.3 L / 4.0 Imp pt / 4.8 US gal |
| Fuel Capacity | 11.4 L / 2.5 Imp gal / 3.0 US gal |
| Manuals | Service Manual |
Engine[edit | edit source]
The engine was a Air cooled cooled Single cylinder, OHV. The engine featured a 6.5:1 compression ratio.
Chassis[edit | edit source]
Stopping was achieved via Drum, internal expanding in the front and a Drum, internal expanding in the rear. The front suspension was a Druid forks while the rear was equipped with a Rigid, spring loaded saddle. The Model 9 was fitted with a 11.4 L / 2.5 Imp gal / 3.0 US gal fuel tank. The wheelbase was 1372 mm / 54 in long.
Photos[edit | edit source]
Overview[edit | edit source]
| Make Model. | Sunbeam Model 9 |
|---|---|
| Year | 1924 - 27 |
| Engine Type | Single cylinder, OHV |
| Displacement | 493 cc / 30.1 cu in |
| Bore X Stroke | 80 x 98 mm mm |
| Cooling System | Air cooled |
| Compression | 6.5:1 |
| Lubrication | Dry sump |
| Induction | AMAC carburetor |
| Exhaust | Single |
| Ignition | EIC Magneto |
| Starting | Push |
| Power | 2.6 kW / 3.50 hp |
| Transmission | 3-Speed, medium ratio |
| Gear Ratios | 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 |
| Final Drive | Chain |
| Frame | Single front down tube |
| Front Suspension | Druid forks |
| Rear Suspension | Rigid, spring loaded saddle |
| Front Brakes | Drum, internal expanding |
| Rear Brakes | Drum, internal expanding |
| Wheels | Steel, laced wire spokes |
| Tires, Front And Rear | 3.25 x 26" (Optional: 3.50 x 26") |
| Dimensions | Length: 2083 mm / 82.0" Width: 813 mm / 32.0" |
| Wheelbase | 1372 mm / 54 in |
| Saddle Height | 711 mm / 28.0" |
| Fuel Capacity | 11.4 L / 2.5 Imp gal / 3.0 US gal |
| Oil Capacity | 2.3 L / 4.0 Imp pt / 4.8 US gal |
| Source | Marston-Sunbeam / Bonhams |