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).
Internal memorandum regarding the performance and modification of Watford EW6 magnetos.
| Identifier | ExFiles\Box 65\3\ scan0207 | |
| Date | 7th March 1928 | |
| To Roy.{Sir Henry Royce} from EFC. cc. By.{R.W. Bailey - Chief Engineer} x7791 EFC9/T7.3.28. WATFORD EW6 MAGNETOS. With reference to our EFC2/T11.2.28 we would now like to suggest to the makers that these four machines be converted to continuous cam rings, so as to be similar to the one machine (No.106012) brought by Mr. Borth recently. Perhaps you will write them to this effect. They might be interested to know that the particular machine No.106012 developed a knock after 245 miles running, but this was cured by removing the distributor gears as if a particle of foreign substance was responsible. So far as we can see therefore at present that Watford magneto represents a distinct improvement. EFC. | ||