| Year | 1960 |
| Date | 28-Apr |
| Volume | 122 |
| Issue | 3,068 |
| Page | 506 |
| Category | Internal Combustion |
| Part | |
| Title | Flat Twin Petrol Engine of 50 c.c. |
| Author | Edgar T.Westbury |
| Notes | Machining the main working parts. Centre-drilling, avoiding chatter, fitting ball races, fitting big ends |