| Year | 1981 |
| Date | 03-Jul |
| Volume | 147 |
| Issue | 3,660 |
| Page | 813 |
| Category | Hot Air |
| Part | 2 |
| Title | Ergo 2. A 19cc V2 Marine Rider Engine |
| Author | R.S.Robbins |
| Notes | Main bearing housing, mounting frames, cold cylinder head cap, snifter valve, flywheel, cylinder details, con rods, sleeve regenerator |