| Year | 1970 |
| Date | 06-Feb |
| Volume | 136 |
| Issue | 3,386 |
| Page | 140 |
| Category | Internal Combustion |
| Part | |
| Title | Building the "Otter". A 15 c.c. four-stroke petrol engine with overhead valves |
| Author | L.V.R.Haydock |
| Notes | Rocker box, machining ignition points mounting plate |