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).
Examination of a faulty coil, identifying a break in the secondary winding.
| Identifier | ExFiles\Box 46\3\ Scan197 | |
| Date | 18th December 1923 | |
| X,3445. To EY. from EFC. c. EP.{G. Eric Platford - Chief Quality Engineer} EFC3/T18.12.23. X.3445 - COIL No.2670. from 45-ZG - HODGES. This coil has now been examined and the fault has been found to be a break in the secondary winding, which causes the available secondary sparking voltage to be reduced. The primary winding appears to be in perfect order. We return the coil herewith. EFC. | ||