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).
Page 2 of an experimental report discussing clutch lining wear, testing methods, and friction coefficients.
| Identifier | ExFiles\Box 26\4\ Scan228 | |
| Date | 17th January 1924 | |
| R.R. 493A (40 H) (SL 42 12-7-23). J.H. D.{John DeLooze - Company Secretary} -2- EXPERIMENTAL REPORT. Expl. No. REF: hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}/LG17.1.24. dust on the surface caused by wear, being unable to get away. They did not demonstrate this to us, and it would appear to be worth proving as otherwise they can always argue that this is the case. (5) We obtained a sketch of the method that they have for testing clutch lining of the disc type. (6) The co-efficient of friction of Ferodo against a cast iron surface is 5% higher then against a similar steel face from their tests. HS{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||