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).
Extract discussing the supply and wear patterns of 20 HP dynamo brushes.
| Identifier | ExFiles\Box 165\6\ img059 | |
| Date | 14th February 1927 | |
| :revirD X5670: yllareneg-gninnur eht no skrameR Extract from NRC{N. R. Chandler}7/EW.14.2.27. X.4652. (4) With regard to 20 HP. dynamo brushes, our Stores records show that over 100 of each type have been booked out in approximately 6 months, and these have been sent to outside customers which includes Depots, Agents, and Private Owners, and it does not include those fitted in Mr. Brock's Department, during repairs. We would say we find new brushes are generally necessary after a dynamo has been out for some time, chiefly on account of wear but also on account of the edges being chipped. Reduction in length due to wear accounts for the greatest number. NRC.{N. R. Chandler} | ||