| Year | 1957 |
| Date | 12-Sep |
| Volume | 117 |
| Issue | 2,938 |
| Page | 368 |
| Category | Internal Combustion |
| Part | 5 |
| Title | A 60 c.c. Horizontal Gas Engine (Centaur) |
| Author | Edgar T.Westbury |
| Notes | Valve gear operating mechanism. Camshaft bearings, inlet and exhaust cams, rockers |