| Year | 2020 |
| Date | 20-Nov |
| Volume | 225 |
| Issue | 4,652 |
| Page | 679 |
| Category | Stationary Engine |
| Part | 7 |
| Title | Grasshopper Haulage Engine - Eccentric |
| Author | Stewart Hart |
| Notes | Completes his trilogy of stationary engines with a grasshopper haulage engine. Eccentric assembly, eccentric sheath, eccentric outer, eccentric inner, method of fabrication, eccentric valve link, alternative eccentric assembly |