| MODEL | SUNBEAM MODEL 9 1924 - 1927 |
| Year | 1924 - 1927 |
| Engine Type | Single cylinder, OHV |
| Displacement / Capacity | 493 cc / 30.1 cu in |
| Bore X Stroke | 80 x 98 mm |
| Compression Ratio | 6.5:1 |
| Cooling System | Air |
| Max Power | 2.6 kW / 3.5 hp |
| Max Torque | — |
| Ignition | EIC magneto |
| Induction | AMAC carburettor |
| Start System | Push start |
| TRANSMISSION SPECS | |
| Lubrication | Dry sump |
| Gear Box | 3-speed, medium ratio |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Single front downtube |
| Front Suspension | Druid forks |
| Rear Suspension | Rigid, spring-loaded saddle |
| Front Brakes | Drum, internal expanding |
| Rear Brakes | Drum, internal expanding |
| DIMENSION SPECS | |
| Overall Length | 2083 mm / 82.0 in |
| Overall Width | 813 mm / 32.0 in |
| Overall Height | — |
| Seat Height | 711 mm / 28.0 in |
| Wheelbase | 1372 mm / 54 in |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 3.25 x 26 in (optional 3.50 x 26) |
| Rear Tyre | 3.25 x 26 in (optional 3.50 x 26) |
| FUEL SYSTEM | |
| Fuel Capacity | 11.4 Litres / 3.0 US gal |
| Fuel Consumption | — |
| Top Speed | — |
Introduced in 1924 alongside the 350 Model 8, the 500 cc OHV Model 9 was designed by John Greenwood with a three-ball-bearing crankshaft and dry-sump oiling. Early machines were sold as competition mounts, often without a kickstarter. Once the Model 90 took over racing duties it became a quick, dependable sports tourer.
