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).
Technical note detailing the properties of graphite bronze for a servo.
| Identifier | ExFiles\Box 129\4\ scan0137 | |
| Date | 1st February 1938 | |
| Rm.{William Robotham - Chief Engineer} from Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} 1.2.38. GRAPHITE BRONZE FOR SERVO. is:- The information asked for in attached letter Max. unit pressure 150 lbs/square inch " speed ...... 8.5 feet/Sec. Coefficient of friction 0.37 but if coefficient has to be lower, end load goes up in that proportion. Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} | ||