Arrangement of a 3-wire, 50V electrical system with a two-speed armature.
| Identifier | WestWitteringFiles\T\March1929-December1929\ Scan234 | |
| Date | 31th October 1929 | |
| EFC. {E. Fowler Clarke - Electrical Engineer} FROM R. {Sir Henry Royce} ORIGINAL R1/M31.10.29. x2048. Many thanks for your EFC {E. Fowler Clarke - Electrical Engineer} 2/AD281029., re. 50 and 25 V. {VIENNA} cotors. I am arranging for a 3 wire system, 50 V. {VIENNA} excitation, 25 and 50 V. {VIENNA} two speed armature. I have two 24 V. {VIENNA} batteries that I can put in series, but I don't suppose I shall get far before next Spring. I have very little time and energy to spare for this little indulgence. R. {Sir Henry Royce} MADE AT CROXLEY | ||
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).