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).
Statistical report on various brake faults, their causes, and remedies across different models.
| Identifier | ExFiles\Box 47\3\ Scan424 | |
| Date | 1st March 1932 guessed | |
| -2- 20 HP. 25 HP. PH.I. PH.II. TOTAL. GRAND TOTAL. REMARKS. BRAKES SEIZE REAR. March Quarter. C.C. 4 18 - 1 23 } 31 W.P. - 7 - 1 8 } Previous " C.C. 11 19 - 5 35 } 40 W.P. - 4 - 1 5 } Six months. 15 48 - 8 71 71 Modification to 20/25 HP. rear brake shaft bearing is being carried out on all cars as they become available as per Depot Sheet No.220. BRAKES THUMP. March Quarter. C.C. - 4 1 3 8 } 10 W.P. - 2 - - 2 } Previous " C.C. 4 5 3 2 14 } 14 W.P. - - - - - } Six months. 4 11 4 5 24 24 Generally due to insufficient pound-age on the Servo Pendulum Lever and may be cured by adjustment. BRAKES INEFFICIENT. March Quarter. C.C. 2 9 2 12 25 } 26 W.P. - - - 1 1 } Previous " C.C. - 12 6 16 34 } 35 W.P. - - - 1 1 } Six months. 2 21 8 30 61 61 This in the majority of cases is due to cars being fitted with Ferobestos liners causing excessive wear in short mileages. All Ph.II R.H. cars have Ferobestos front liners & hand brakes rear; a number of 20/25 HP. have also had Ferobestos front liners. All cars now being built are fitted with Ferodo Liners all round. BRAKES TOO MUCH TRAVEL. March Quarter. C.C. - 1 - 1 2 } 2 W.P. - - - - - } Previous " C.C. - - 1 - 1 } 1 W.P. - - - - - } Six months. - 1 1 1 3 3 | ||