The Sunbeam Model 1 and Model 2 were motorcycles produced between 1923 and 1930. These bikes had a single cylinder, side valve engine with a capacity of 347 cc and a bore and stroke of 70 x 90 mm. They were air cooled with a single exhaust and kickstarting. They had a power output of 2.05 kW (2.75 hp) and a 3-speed transmission. The final drive was an enclosed chain. The frame was a single downtube cradle with front suspension provided by Druid forks and rear suspension being rigid with a spring loaded saddle. Both the front and rear brakes were drum brakes. The wheels of the Sunbeam Model 1 and Model 2 were made of steel with laced wire spokes.
Technical specifications:
Make Model: Sunbeam Model 1, Model 2
| Year | 1923 – 30 |
|---|---|
| Engine | Single cylinder, side valve |
| Capacity | 347 cc / 21.2 cu |
| Bore x Stroke | 70 x 90 mm |
| Cooling System | Air cooled |
| Exhaust | Single |
| Starting | Kick |
| Power | 2.05 kW / 2.75 hp |
| Transmission | 3-Speed |
| Final Drive | Enclosed chain |
| Frame | Single downtube cradle |
| Front Suspension | Druid forks |
| Rear Suspension | Rigid, spring loaded saddle |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| Wheels | Steel, laced wire spokes |
