| Year | 1974 |
| Date | 19-Jul |
| Volume | 140 |
| Issue | 3,493 |
| Page | 714 |
| Category | Correction |
| Part | 18 |
| Title | Building the Allchin |
| Author | W.J.Hughes |
| Notes | Drilling the spoke palms, jig for building the wheels, building the wheels, fixing the spokes, riveting the spokes, all those Allchins! |