| Year | 1991 |
| Date | 16-Aug |
| Volume | 167 |
| Issue | 3,903 |
| Page | 198 |
| Category | Pump |
| Part | |
| Title | A Hydraulic Ram |
| Author | Jernej Bohm (Yugoslavia) |
| Notes | Makes a hydraulic ram using standard plumbing fittings and a disused gas bottle. How does it function, construction, connecting, starting, characteristics, a few more instructions, picture on page 179 |