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).
With diagrams illustrating a design issue with an oil chamber and its suggested correction.
| Identifier | ExFiles\Box 1\4\ B001_X 100a-page013 | |
| Date | 8th November 1932 guessed | |
| 1/4" level of oil in the chamber. This is bad as all the dirt will be left in the well. This should be like this. There was no sign of preignition on the run down here and no detonation. A H Hercock | ||