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).
The coefficient of friction and servo pressure for front brakes.
| Identifier | ExFiles\Box 26\4\ Scan226 | |
| Date | 17th January 1924 guessed | |
| contd:- -3- The co-efficient of friction determined from our front brake results, taking into account the wrapping action, is .427. Ferodo's said that this figure was quite reasonable. Taking μ = .43 the EAC.lll. Servo would give an increase of pressure of approx. 16 to 1 against 17.5 to 1 determined experimentally. Hs{Lord Ernest Hives - Chair}/ACLovsey. | ||