| Year | 1930 |
| Date | 30-Jan |
| Volume | 62 |
| Issue | 1,499 |
| Page | 116 |
| Category | Model Aeronautics |
| Part | |
| Title | Undercarriages |
| Author | J.E.Pelly Fry |
| Notes | Wheels, aluminium disc, silk covered, balsa wood, typical for racer, attachment of undercarriage to light duration models, steel undercarriage to compressed-air driven racer, split axle undercarriage, low-resistance |