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).
Graph from an inertia machine test on a dry woven friction material, plotting coefficient of friction and temperature against the number of stops.
| Identifier | ExFiles\Box 141\3\ scan0181 | |
| Date | 20th October 1932 | |
| BRITISH BELTING & ASBESTOS LTD. SCANDINAVIA MILLS, CLECKHEATON, YORKS, ENGLAND. INERTIA MACHINE TEST. TEMP. DEGREES. F.{Mr Friese} C. COEFFICIENT OF FRICTION NUMBER OF STOPS LEGEND: COEFF. OF FRICTION TEMPERATURE Material: 2" x 1/4" MINTEX N.M.T. ROLL NO Y 1848 DRY WOVEN Brake Rig: STANDARD B.B.A Drum: C.I Time Interval: 45 SECS. Flywheel R.P.M.: 400 Drum Speed: 1256 Ft./Min. Power Absorption per Stop: 37600 Ft. Lbs. 5200 Kg. Metres Weight Loss: 0.565 Gms. Wear Factor: H.P. Hrs. per Gramme. Date: 20TH OCT. 32 Test No.: M.2368 W I.M. Marks | ||