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).
Design changes for a dynamo armature to achieve augmented output.
| Identifier | ExFiles\Box 68\4\ scan0084 | |
| Date | 23th April 1928 | |
| X8664 To BY.{R.W. Bailey - Chief Engineer} from EFC. c. BY/RD. EFC1/T23.4.28. X5663 DYNAMO FOR AUGMENTED OUTPUT AT THE HIGHER SPEEDS. With reference to our notes EFC4/T28.3.28 and EFC3/T28.3.28 dealing respectively with 26 slot armatures for the 20 H.P. and 40/50 H.P., will you please note that in view of R2/M18.4.28 it will be necessary to cancel these instructions for the time being. We should be pleased if Mr. Davis could make a rough drawing of one slot of 28 slots in which the number of turns per coil has been altered from 4 to 3, and the slot less deep and wider accordingly. We considered this case before finally arriving at the 26 slots, and decided that it was rather unsatisfactory. We would probably send a copy of Mr. Davis' rough lay-out to R.{Sir Henry Royce} for his comments. EFC. | ||