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).
Starting motor's brush material and holder design.
| Identifier | ExFiles\Box 35\1\ scan 013 | |
| Date | 8th September 1919 | |
| RR 235 a (200 T) (S F.{Mr Friese} 674 22-5-19) G 2376 X.2656. By4/P8.9.19. Mr. Ormerod. c. to Bn.{W.O. Bentley / Mr Barrington} c. to Ck.{Mr Clark} c. to Da.{Bernard Day - Chassis Design} CHASSIS. X.2656. RE STARTING MOTOR. X.3082. I am attaching herewith copy of E4/G5919. in which Mr. Royce raises the question of - (1) The material of the brushes and considers that one with less copper would be more suitable. (2) The design of the brush holder. The latter point is simply a question for Mr.Day. to deal with. In regard to the former I consider all that should be done for the moment is, that we should instruct the O.O. to obtain a supply of brushes, say four dozen, in a mixture agreed to between yourself and Mr. Clarke, the mixture containing less copper, but I consider that the Experimental Department should determine that this material is better before we should change the material on the Part Line. EV{Ivan Evernden - coachwork} | ||