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).
Report comparing the performance of Raybestos and Ferodo clutch materials.
| Identifier | ExFiles\Box 26\4\ Scan177 | |
| Date | 13th March 1918 | |
| R.R. 26 10M Bks.) (SE 591 13-3-18). M.P. 189358 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To________ Order No.________ Customer's No.________ very much better than the Raybestos, the characteristic of the latter being a tendency to slip badly when hot, under strong spring pressure; but returns to an abnormal coefficient when allowed to cool. In the end the Raybestos became useless & on examination showed a large amount of dust in the clutch which had been shedded from the fabric; the Ferodo remained O.K. with like treatment. Signed________ This Sheet must be filed on completion of the work. | ||