From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Diagram illustrating the eccentricity of valve passages for a 'Delco II' model, viewed from the high-pressure end.
| Identifier | WestWitteringFiles\V\December1930-February1931\ Scan140 | |
| Date | 7th January 1931 guessed | |
| SAT 4 1/2" MARGIN ¢ MAIN SHAFT 50° 25° CYLINDER & BORE LOW PRESSURE PASSAGE LARGE HOLE .282" DIA SMALL " .250" " HIGH PRESSURE PASSAGE DIAGRAM OF ECCENTRICITY OF VALVE PASSAGES. VIEWED FROM HIGH PRESSURE END. "DELCO II" | ||