| Year | 1980 |
| Date | 02-May |
| Volume | 146 |
| Issue | 3,632 |
| Page | 542 |
| Category | Exhibition |
| Part | |
| Title | 49th Model Engineer Exhibition 1980. The Hot Air Engine Competition |
| Author | D.M.Chaddock (D.H.Chaddock?) |
| Notes | Mr Thomas' swing beam engine, Mr Collins' "Whippet", Mr Robbins vertical marine Rider plant, John Griffin's "Flame Eater" vacuum engine |