| Year | 1945 |
| Date | 12-Jul |
| Volume | 93 |
| Issue | 2,305 |
| Page | 30 |
| 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 | Variable-output metering oil pump as fitted to "Atom V" and other engines, components, oil pump details, a simple valve guide drilling jig (for "Apex Minor"), blue prints |