| Year | 2007 |
| Date | 02-Feb |
| Volume | 198 |
| Issue | 4,292 |
| Page | 149 |
| Category | Road Steam |
| Part | 28 |
| Title | Savage's Universal Carrier |
| Author | The late Stan Nipper and Martin Wallis |
| Notes | Continue their description of the gears. Importance of neutral, primary reduction gears, change speed bobbin, second shaft, engine and gearbox plan view, square hole, primary drive and change speed gears |