| Year | 1997 |
| Date | 11-Apr |
| Volume | 178 |
| Issue | 4,039 |
| Page | 442 |
| Category | Hot Air |
| Part | |
| Title | A Vacuum Engine |
| Author | John Ryder |
| Notes | Recalls his first experiences with a vacuum engine and recounts a few of the pifalls which the unwary lone hand can encounter. Start and run considerations, additional information, component part details and photographs |