| Year | 2016 |
| Date | 15-Apr |
| Volume | 216 |
| Issue | 4,532 |
| Page | 574 |
| Category | Road Locomotive |
| Part | 24 |
| Title | Garrett 4CD Tractor in 6 inch scale |
| Author | Chris Gunn |
| Notes | Looks at the main gear drive and the differential. Drive: from canon shaft to axle, differential housing, winch drum, the differential |