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).
Instructions to create a higher output dynamo by swapping parts between two 20 HP machines.
| Identifier | ExFiles\Box 68\4\ scan0257 | |
| Date | 12th April 1928 | |
| RHC.{R. H. Coverley - Production Engineer} from EFC. X.5663 EFC4/T12.4.28. SPECIALLY ARRANGED DYNAMO FOR HIGHER OUTPUT AT THE HIGHER SPEEDS. Herewith we hand to you two 20 H.P. machines Nos.288 and 931. Will you please have the 57 slot armature and the special pole pieces removed from No.288 and fitted to No.931. Will you please replace the pole pieces from No.931 in carcase No.288, but return the 29 slot armature removed from No.931 separately from the carcase. EFC. | ||