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).
Unsatisfactory brake servo performance without a spring thrust collar and reports of rough action.
| Identifier | ExFiles\Box 105\4\ scan0058 | |
| Date | 29th April 1927 | |
| To BJ. from R.{Sir Henry Royce} c. to OY. Hs.{Lord Ernest Hives - Chair} c. to BY.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} X5370 R 5/M29.4.27. BRAKES. X.8370 X.8420 X.5370 X.5420 It should be thoroughly understood that the present servo is not perfectly satisfactory unless fitted with a spring thrust collar. This fitting causes the servo to act without jaggers, and without shock. I understand there is a tendency to alter the bedding of brakes in case of their rough action - (London trials driver reported this of a 20 HP. at Cricklewood). This seems wrong. R.{Sir Henry Royce} | ||