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).
Fitting of an experimental dynamo with new field coils.
| Identifier | ExFiles\Box 51\1\ Scan147 | |
| Date | 18th April 1923 | |
| X 4383. EFC. {E. Fowler Clarke - Electrical Engineer} from RHC. {R. H. Coverley - Production Engineer} RHC {R. H. Coverley - Production Engineer} 5/LG18.4.23. RE. EXPERIMENTAL DYNAMO. Your experimental Dynamo has been fitted with field coils which have been wound with 20 S.W.G. - 140 turns in each coil, against the standard coils which are 19 S.W.G. - 120 turns per coil. RHC. {R. H. Coverley - Production Engineer} | ||