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).
Inspection report on the condition of a commutator and its brush surfaces following a test.
| Identifier | WestWitteringFiles\S\September1928-October1928\ Scan079 | |
| Date | 8th December 1924 | |
| RR 238 (150 BKS.) (DB{Donald Bastow - Suspensions} 461-8 12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. 19 To Order No. PD 30. (2) Customer's No. The surface of the commutator was in good condition, the segments being evenly discoloured and polished. There was only a slight blackening along the trailing edges. The brush surfaces were good, and only a small amount of brush dust was deposited on the end-bracket and holders. Throughout the test, the output was maintained satisfactorily. Generally, the result is considered very good. Signed C.A.P. This Sheet must be filed on completion of the work. | ||