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).
Request for low-speed sparking figures for a specific Watford E.W.6 Magneto.
| Identifier | ExFiles\Box 65\3\ scan0427 | |
| Date | 4th January 1931 | |
| X7791. Sft{Mr Swift}/Mr. Ellis. from EFC. EFC5/ADL 4.1.31. X.7791. WATFORD E.W.6. MAGNETOS. Will you kindly let us have from your records the low speed sparking figures obtained on the production test of magneto No. 127221 which has been fitted to the engine in R's chassis 27-EX. EFC. | ||