| Year | 1941 |
| Date | 18-Dec |
| Volume | 85 |
| Issue | 2,119 |
| Page | 486 |
| Category | Improving the Two-Stroke |
| Part | |
| Title | Carburation and Ignition. A Brief review. |
| Author | Edgar T.Westbury |
| Notes | Spark frequency, an early lightweight coil, a simple spring-blade contact-breaker show fitted to the "Kestrel" 5 c.c. engine, high -speed contact-breaker employing a Delco-Remy lightweight rocker arm |