| Year | 1998 |
| Date | 25-Sep |
| Volume | 181 |
| Issue | 4,077 |
| Page | 396 |
| Category | Hot Air |
| Part | 5 |
| Title | Little Gem. A Twin Cylinder Hot Air Engine |
| Author | Ray McMahon (Northern Ireland |
| Notes | Crankshaft, flywheel and bearings. Crankshaft centre, coupling pins, piston rod big end |