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).
Critical review of a test report on brake wear, outlining requirements for future reports.
| Identifier | ExFiles\Box 141\2\ scan0337 | |
| Date | 13th September 1940 | |
| Rm{William Robotham - Chief Engineer}/MHR.{M. H. Rigby} from Rm.{William Robotham - Chief Engineer} Rm.{William Robotham - Chief Engineer}13/ML.13.9.40. WEAR ON BRAKES. (Rm{William Robotham - Chief Engineer}/MHR.{M. H. Rigby}1/ET.10.9.40.) This report represents the results of a lot of tests but misses the boat due to the way it is served up. The object of a report by an Experimental tester is to provide the designer with data on which to design. There is an almost complete absence of figures throughout this report. The maximum amount of data must be provided to allow the designer to make his own deductions. The report is incomplete because no data is given on the wear factors of linings at different temperatures. 250° C. is given as the critical or burning out temperature of the lining yet no results are tabulated which suggest that this figure can be approached on the road. Ferodo's are available and should be used to supply the information. Description of measuring apparatus used, with sketches or photographs, should be provided with every report. Recommendations should be divided into two sections. 1. Suggestions for further experiments. 2. Recommendations for design modifications. You cannot state that air deflectors are twice as good on one car as another without giving dimensional reasons. Have you got all the data provided by AFM{Anthony F. Martindale}? Have you read up all the work that has been done by other people on the subject? I agree that you must get a figure of merit for different ribs on the drum. Your recommendations for improving the car are lamentable. - Continued - | ||