| Year | 1940 |
| Date | 13-Jun |
| Volume | 82 |
| Issue | 2,040 |
| Page | 571 |
| Category | Improving the Two-Stroke |
| Part | |
| Title | Suggestions for experiments in model I.C. Engine design |
| Author | Edgar T.Westbury |
| Notes | Section of a Day "valveless" engine, overheating, section through cylinders of the Clerk engine of 1881, four-stroking, checking scavenge efficiency, the "Dolphin" engine (Ricardo and Hetherington), where to start improving |