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).
Letter quoting a cable about a 12-MC engine running on after being switched off, suggesting potential faults and requesting a report.
| Identifier | ExFiles\Box 72\2\ scan0057 | |
| Date | 9th November 1925 | |
| Oy15-E-11925 X8991 November 9, 1925. Rolls-Royce, Ltd., Derby, England. Gentlemen: We are today in receipt of your cable which reads as follows: "Derby 419 Reference 12-MC Engine running after switching off If not a general complaint suggest trouble faulty earthing of magneto or some self ignition effect such as ignition plug or faulty overheated valves Try changing these units in order mentioned Please report In meantime further investigations being made ROYCAR." Yours very truly, MO/E | ||