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 a Dynamo R3 on a 7GII, detailing mileage, brush and commutator condition.
| Identifier | ExFiles\Box 51\1\ Scan328 | |
| Date | 7th January 1924 | |
| Extract from AB.97. 7.1.24. Dynamo R3 on 7GII. Fitted 4.10.23 with EG2 bevelled brushes, run 1457 miles and returned to make positive brush bevelling more effective. Run a further 2466 miles (total miles 3923) brushes very good, well polished commutator fairly good, slightly irregular light brown, probably not yet re-surfaced after machining. The inspection was made with the machine in situ where the control brush is not accessible. EFC {E. Fowler Clarke - Electrical Engineer} /FJA. | ||