| Year | 2006 |
| Date | 04-Aug |
| Volume | 197 |
| Issue | 4,279 |
| Page | 133 |
| Category | Stationary Engine |
| Part | 1 |
| Title | Hypocycloidal Double Acting Engine |
| Author | Les Kerr (Australia) |
| Notes | Describes a fascinating engine with a crankshaft design steeped in history & mathematical mystery. Side view, eccentrics, construction, sectional assembly drawing |