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).
Potential materials, specifically plain cotton duck and cork, for use in slipper flywheel friction discs.
| Identifier | ExFiles\Box 5\6\ 06-page017 | |
| Date | 4th October 1927 | |
| E.{Mr Elliott - Chief Engineer} Dept. from BY.{R.W. Bailey - Chief Engineer} c. to Hs.{Lord Ernest Hives - Chair} c. to Roy.{Sir Henry Royce} X 5300 BY/IO/J4.10.27. Slipper Flywheels - Friction Discs. X.356 X.5300 X.8300 R.{Sir Henry Royce} has suggested that as a result of American experience we should try some plain cotton duck material as friction discs. In addition he has made a further suggestion that we might use cork. I have written pointing out that we have not found that agglomerated cork is a valuable factor from a friction disc point of view, it has a bad habit of disintegrating, and suggested to him that we might use cork inserts in an aluminium plate. We are waiting for a reply from him on this point. In the meantime, however, will you please order up some discs made in plain cotton duck. We shall not be able, as far as I am aware, to buy the discs with selvedge edges; the only source of supply that I know of being by stamping them out of a piece of cloten. We would like C.C. to find out what they can in connection with the production of discs of this material, but I am afraid we shall have to be content with material that may fray out round the inner and outer diameters. BY.{R.W. Bailey - Chief Engineer} | ||