| Year | 1944 |
| Date | 19-Oct |
| Volume | 91 |
| Issue | 2,267 |
| Page | 367 |
| Category | Internal Combustion |
| Part | |
| Title | Experiments in Four-stroke Engine Design. A review of several years' efforts to improve the breed of model petrol engines for speed-boat propulsion and other purposes |
| Author | Edgar T.Westbury |
| Notes | Salute to a friend (F.Ford), the "Apex Minor" 15 c.c. engine, camshaft assembly, cam contours, timing diagram of "Apex Minor" engine, valve-operating gear, carburation and ignition, lubrication, valves and valve assembly details, "Apex" engines |