Note on engine timing for single carburetter characteristics and port ramming to achieve optimum results.
| Identifier | ExFiles\Box 134\1\ scan0117 | |
| Date | 23th December 1938 | |
| -5- Rm {William Robotham - Chief Engineer} /Swdl. {Len H. Swindell} 1/MH. {M. Huckerby} 23.12.38. This shows that a single version of a main engine is not representative and requires a timing suitable for the characteristics of a single carburetter and its port ramming to obtain the optimum results. Rm {William Robotham - Chief Engineer} /Swdl. {Len H. Swindell} | ||
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).