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 vehicle faults and their remedies for the March quarter.
| Identifier | ExFiles\Box 47\3\ Scan062 | |
| Date | 31th March 1931 guessed | |
| -2- 20 HP. 25 HP. PH.I. PH.II TOTAL. GRAND TOTAL. REMARKS. BRAKES THUMP. March Quarter. C.C. 1 2 1 8 12} 12 Generally due to insufficient poundage on the servo pendulum lever and may be cured by adjustment. W.P. - - - - -} Previous " . 1 - 1 3 3 Six months. 2 3 1 9 15 15 BRAKES INEFFICIENT. March Quarter. C.C. 1 2 4 14 21} 22 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 and hand brake 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. W.P. - - 1 - 1} Previous " . 2 1 - 2 5 5 Six months. 3 3 5 16 27 27 BRAKES TOO MUCH TRAVEL. March Quarter C.C. - - 2 2} 8 W.P. - 1 5 6} Previous " . - - - 5 5 Six months. - 1 12 13 13 BATTERY BOX SUSPENSION BROKEN. March Quarter. C.C. - - 1 1} 92 This trouble is definitely cured by fitting the strengthened brackets. See Depot Sheet No. Hd.{Mr Hayward/Mr Huddy}186. This is a standard modification on all existing cars. W.P. - - 91 91} Previous " . - - 31 31 31 Six months. - - 123 123 123 | ||