| Year | 1942 |
| Date | 15-Jan |
| Volume | 86 |
| Issue | 2,123 |
| Page | 65 |
| Category | Improving the Two-Stroke |
| Part | |
| Title | An Interesting 6 c.c. Twin Engine |
| Author | Edgar T.Westbury |
| Notes | Built by R.H.R.Curwen, transfer port side of engine showing crankcase plugs to facilitate big-end assembly, view from carburettor side showing contact-breaker, longitudinal and cross sections, photos by L.Stephens, port timing diagram |