| Year | 1961 |
| Date | 25-May |
| Volume | 124 |
| Issue | 3,124 |
| Page | 650 |
| Category | Internal Combustion |
| Part | |
| Title | Atomag Minor Mark IX |
| Author | Edgar T.Westbury |
| Notes | New simplified magneto. R.O.Porter's 20 c.c. Dolphin engine, simple to build, reduction of size, condenser and stator, follower-crank drive |