| Year | 2022 |
| Date | 11-Feb |
| Volume | 228 |
| Issue | 4,684 |
| Page | 264 |
| Category | Internal Combustion |
| Part | 4 |
| Title | Puma. A Four Cylinder, Twin Camshaft, 30cc I/C Engine |
| Author | Pete Targett |
| Notes | Builds his own version of Malcolm Stride's twin cam internal combustion engine. Cylinder assembly/piston rings, valves |