| Year | 1946 |
| Date | 11-Jul |
| Volume | 95 |
| Issue | 2,357 |
| Page | 26 |
| Category | Petrol Engine Topics |
| Part | |
| Title | "Carving Out" a Two-Stroke Engine. The "Zephyr" 2 1/2 c.c. engine |
| Author | Edgar T.Westbury |
| Notes | Locking ring, transfer port cover, rear housing locking ring, crankshaft, rotary-valve disc |