| Year | 2003 |
| Date | 11-Jul |
| Volume | 191 |
| Issue | 4,199 |
| Page | 32 |
| Category | Steam |
| Part | 7 |
| Title | Oscillating Engines. Further Reflections |
| Author | Colin Pape |
| Notes | Three more developments. T10 - Port in pivot engine. Pivot, engine frame, leakage at the port face. T11 - Inside-out engine, conclusions |