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).
The progress of brush tests for the standardized 40/50 dynamo.
| Identifier | WestWitteringFiles\Q\2-July1927-September1927\ 48 | |
| Date | 18th August 1927 | |
| Contd. -5- EFC3/T18.8.27. Speaking of the 40/50 dynamo, now that we have standardised the N.B. (narrower brush and larger air gap) machine, a corresponding series of brush tests. i.e. with similar grades is in progress, as time and opportunity permit. All of the above tests were as nearly as possible in the same electrical condition (other than the brushes) and were run on the highest bolt-ampere output characteristic likeby to be met with on chassis. Also under similar temp- erature conditions. EFC. | ||