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).
Performance of the cam for the four-wheel brake system on car GOS.111.
| Identifier | ExFiles\Box 5\3\ 03-page177 | |
| Date | 1st September 1925 | |
| 45940 To Hs.{Lord Ernest Hives - Chair} from R.{Sir Henry Royce} c. to CJ. BY.{R.W. Bailey - Chief Engineer} R6/M1.9.25. GOS.111. in FRANCE. X.5840 X.5940 X.8370 It would appear that the cam for the four wheel brakes on this car is about as good as it can be, the report being at first that it gave insufficient braking except with a large pedal travel. This I think good if not overdone, and therefore the cam they are using is probably nearer right than the cam I have on 8-G-111 here. Moreover it will be noticed that with this scheme no servo jaggers have been reported. This is a distinct improvement and can only be otherwise met as far as I know by slowing the speed of the servo. This has not yet been tested to find out whether the lag is too great, but if the lag is not too great I think it would be a decided improve-ment. R.{Sir Henry Royce} | ||