| Year | 2003 |
| Date | 18-Apr |
| Volume | 190 |
| Issue | 4,193 |
| Page | 424 |
| Category | Steam |
| Part | 4 |
| Title | Oscillating Engines. Some Reflections |
| Author | Colin Pape (France) |
| Notes | Penultimate engine, 'well-behaved' ultimate design. Straight line crankshaft, reversing valve and throttle. Dream engine no. 2, ultimate engine, new cylinder pivots, new port faces, new backplate. More on mirrors, no flywheel |