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).
Urgent requirement for the 28 slot armature for the Phantom dynamo.
| Identifier | ExFiles\Box 68\4\ scan0020 | |
| Date | 18th August 1927 | |
| X8672 18.8.27. X.8672 - 28 SLOT ARMATURE. As the result of an enquiry on our part as to whether the 28 slot armature is still urgently required for the Phantom dynamo, the position appears to be as follows :- The late standard machine is not now being made; all machines produced being of the modified type. Since comparatively few of the modified type of machine have to be returned as noisy, and these can usually be quietened by changing bearings, end brackets, etc., the 28 slot armature ceases to be urgently required as a possible means of quietening machines, and of saving the expense of having standard machines modified. In view of this, and the fact that the N.B. machine is now standard, and some of which are actually being made, it seems that all further work with the 28 slot armature should be carried out on the N.B. type of machine. EFC/CAP. | ||