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).
Failure of a coil and the subsequent examination of its windings.
| Identifier | ExFiles\Box 163\7\ img130 | |
| Date | 20th October 1930 guessed | |
| -5- (13) Remarks :- Coil failed almost immediately after being placed on rig. (14) Results of examination of windings. Coil found to be completely charred apparently due to heating test. | ||