| MODEL | SUNBEAM MODEL 3 1915 - 1926 |
| Year | 1915 - 1926 |
| Engine Type | Single cylinder, side valve |
| Displacement / Capacity | 499 cc / 30.5 cu in |
| Bore X Stroke | 85 x 88 mm |
| Compression Ratio | — |
| Cooling System | Air |
| Max Power | 2.6 kW / 3.5 hp |
| Max Torque | — |
| Ignition | — |
| Induction | — |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 3-speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Single downtube cradle |
| Front Suspension | Druid forks |
| Rear Suspension | Rigid, spring-loaded saddle |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | — |
| Rear Tyre | — |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | — |
| Top Speed | — |
The 3.5 hp Standard became the Model 3 once Sunbeam numbered its models. The wartime version gained a chain-driven magneto and served the War Department as a general-service machine. After 1918 it carried on with minor refinements until 1926.
