| Year | 1997 |
| Date | 14-Feb |
| Volume | 178 |
| Issue | 4,035 |
| Page | 193 |
| Category | Hot Air |
| Part | |
| Title | Excelsior |
| Author | Ted Pepper |
| Notes | Describes the development of his first successful hot air engine. Considerations, construction, developments, confession, practical hints, update, great minds ... photo of author with David Ayres |