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).
Correspondence regarding specifications for Phantom Dynamo armatures.
| Identifier | WestWitteringFiles\S\2April1928-June1928\ Scan051 | |
| Date | 25th April 1928 | |
| 2 EFC. FROM R.{Sir Henry Royce} R5/M25.4.28. Copy to BJ. " HS.{Lord Ernest Hives - Chair} " BY.{R.W. Bailey - Chief Engineer} PHANTOM DYNAMO - 2 ARMATURES FOR DIFFERENT SPEED & OUTPUT. X 8664 Referring to your EFC2/T23428., I am not very particular whether you have 26 or 28 slots so long as they are alike on both armatures. The armature would be 3 and 4 turns respectively. Also that both dynamos, whichever armature is used, should have a less rapid falling output with speed than at present, which appears to be overdone in this respect. R.{Sir Henry Royce} | ||