| Year | 1970 |
| Date | 20-Feb |
| Volume | 136 |
| Issue | 3,387 |
| Page | 196 |
| 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 | Machining the camshaft, machining the ignition cam, inlet and exhaust stub pipes, how to make the press-fit shaft, machining the piston, the connecting rod, assembly, starting the engine |