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).
The failure of 40/50 coils on a Goshawk engine, confirming re-wound coils are tested and approved for use.
| Identifier | ExFiles\Box 47\4\ Scan063 | |
| Date | 17th September 1923 | |
| X. 4273. X4118 To EP{G. Eric Platford - Chief Quality Engineer}/THN. from EFC, EFC4/T17.9.23. X.4273 - RE FAILURE OF 40/50.COILS ON GOSHAWK. Answering your EP{G. Eric Platford - Chief Quality Engineer}/CEP8/H15.9.23 with reference to coils Nos. 3478 and 3115, these coils have been completely re-wound and although going under the same numbers are therefore to be looked upon as new coils. Their primaries have been subjected to our new tests and therefore they do not come under the category mentioned in our EFC4/T21.8.23. It should thus be quite O.K. to use these. EFC. | ||