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).
Brush noisiness in five machines, attributing the issue to commutator irregularity.
| Identifier | WestWitteringFiles\Q\December1926-January1927\ 55 | |
| Date | 10th December 1926 | |
| Contd. -2- EFC6/T10.12.26. similar type which had also developed brush noisiness, and which in this instance also we think may be due to a slight irregularity in the commutator which may be removed by skimming. It is only necessary for us to eliminate any tendency for the narrower brushes to produce noise, before a standardisation sheet for this item can be circulated, as we have found no other fault. We have now in all five of these machines, two of which have done a considerable amount of running. Three of these are at present on EHK chassis and a fourth is about to be placed on a chassis. There has been no other complaint except the one referred to. EFC. | ||