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).
Findings on clutch slip and the behaviour of linings at high temperatures.
| Identifier | ExFiles\Box 114\2\ scan0109 | |
| Date | 24th January 1934 | |
| -2- Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}10/KW.24.1.34. Clutch Slip. We have discovered on the bed and Ferodo's agree, that the first time one heats a lining to 400° F.{Mr Friese} µ drops to about .1 and doesn't rise again till cooked to 600°F.{Mr Friese} This may solve some of the mystery. I hope you are having a good time, and that your cable for valve springs doesn't mean all 12 have broken. Hs{Lord Ernest Hives - Chair}/H.Grylls. | ||