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).
Letter from Ferodo Limited concerning the supply and specifications of brake/clutch linings and discs.
| Identifier | ExFiles\Box 141\3\ scan0217 | |
| Date | 13th October 1933 guessed | |
| From FERODO LIMITED. Sheet No. 2 Messrs. Rolls-Royce Ltd., Experimental Department, Derby. similar to "Cotton A" but made in an entirely different way, i.e. with selvedged edges. Perhaps, in the meantime, you might like to try a pair of Ferodo VM/21 discs enclosed with the metal parts. The pair of Ferodo S. 3914 linings are not quite ready for posting to-night. It may interest you to know that the maximum μ for "Cotton A" was 0.51 - minimum 0.3. Yours faithfully, FERODO LIMITED. H.J. Field CHIEF ENGINEER. | ||