| Attribute | Norton 490 CS 1 1928 × | Norton 490 CS 1 1927 × |
|---|---|---|
| General | ||
| Production from (year) | 1928 | 1927 |
| Make | Norton | Norton |
| Model | Norton 490 CS 1 | Norton 490 CS 1 |
| Category | Allround | Allround |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, four-stroke |
| Fuel system | Carburettor | Carburettor |
| Displacement (cm³) | 490 | 490 |
| Transmission type,final drive | Chain | Chain |
| Fuel control | Single Overhead Cams (SOHC) | Single Overhead Cams (SOHC) |
| Chassis | ||
| Front brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Seat | Solo seat with springs | Solo seat with springs |
| Wheels | Spoked | Spoked |
| Dimensions | ||
| Dry weight (kg) | 145 | 145 |
| Performance | ||
| Top speed (km/h) | 128 | 128 |