| Year | 2003 |
| Date | 07-Mar |
| Volume | 190 |
| Issue | 4,190 |
| Page | 243 |
| Category | Exhibition |
| Part | |
| Title | Competition Classes at the 72nd Model Engineer Exhibition. Class A3: Internal Combustion Engines |
| Author | David Boote and Neil Read |
| Notes | Bill Connor's Matchless G50 engine, William Downes' 20cc RGB XL engine |