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).
Improvements to the 'Phantom' dynamo through testing and modifications.
| Identifier | ExFiles\Box 62\3\ scan0216 | |
| Date | 13th April 1931 | |
| X6028 Hs.{Lord Ernest Hives - Chair} By/RD4/W13.4.31. RE : DYNAMOS. X.6028 X.6076 In order to improve the output and "cutting in" speed of the "Phantom" dynamo you have already got on test dynamo armature D.73259. This has given an improvement over any other type produced, and if the machine is now modified by making the air gap bigger further improvement will be obtained. We shall be pleased to have the result of this test as soon as possible in order to decide what further modifications can be embodied. By/RD. | ||