| Year | 1957 |
| Date | 26-Sep |
| Volume | 117 |
| Issue | 2,940 |
| Page | 455 |
| Category | Internal Combustion |
| Part | 6 |
| Title | A 60 c.c. Horizontal Gas Engine (Centaur) |
| Author | Edgar T.Westbury |
| Notes | Further valve gear details. Rollers and roller pivots, inlet valve housing, inlet and exhaust valves, valve collars and cotters, request item |