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).
Investigation into motor efficiency and the weight of copper in various motor windings as requested by Mr. Royce.
| Identifier | ExFiles\Box 34\3\ Scan144 | |
| Date | 22th March 1918 | |
| R.R. 235a (200 T) (S.D. 408. 28-4-17.) Bm. 2/156/12. -3- EFC3/T22.3.18. Contd. that we are expending too much energy of the excitation of the field magnet, and perhaps this will account for the rather smaller efficiency. We are going further into the matter of the weight of copper composing the various windings of this motor and the Lucas & C.A.V. motors, as desired by Mr. Royce, and will issue the results in due course. EEC. | ||