| Year | 2012 |
| Date | 13-Jan |
| Volume | 208 |
| Issue | 4,421 |
| Page | 115 |
| Category | Stationary Engine |
| Part | 8 |
| Title | Twin Cylinder Overcrank Engine |
| Author | Stewart Hart |
| Notes | Concludes his construction series. Fixed and sliding spools, straight links, yoke link, governor balls, the bracket, link arm |