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 customer complaints regarding engine and hydraulic systems over a six-month period.
| Identifier | ExFiles\Box 130\1\ scan0160 | |
| Date | 1st September 1934 guessed | |
| - 6 - ENGINE - RATTLE FROM TIMING GEARS. 25 HP. PH.II. TOTAL. GRAND TOTAL. REMARKS. September Quarter. C.C. 66 C.P. 19 30 10 96) 29) 125 20/25 HP. Synchromesh cars. Cam balancing device now standardised on new cars and design for existing cars is available to overcome gear rattles. 40/50 HP. Mainly knock from camshaft and is cured by reducing end play. Previous Quarter. C.C. 74 C.P. 17 18 1 92) 18) 110 Six Months. 176 59 235 235 ENGINE - VALVE SPRINGS BROKEN OR WEAK. September Quarter. C.C. 10 C.P. 1 9 7 19) 8) 27 Valve spring failures are still rather prevalent and an improvement is desirable. Previous Quarter. C.C. 4 C.P. 1 3 8 7) 9) 16 Six Months. 16 27 43 43 TOTAL HYDRAULIC COMPLAINTS. September Quarter. C.C. 31 C.P. 4 17 1 48) 5) 53 Previous Quarter. C.C. 35 C.P. 2 12 3 47) 5) 52 Six Months. 72 33 105 105 HYDRAULIC KNOCKS. September Quarter. C.C. 22 C.P. 3 13 1 35) 4) 39 Knocks on existing dampers are being satisfactorily dealt with by modifying the replenishing ball valves and fitting oil feeds to intermediate levers as per Depot Sheet Hd.{Mr Hayward/Mr Huddy}225. The split piston type now being produced appears satisfactory in service. Previous Quarter. C.C. 25 C.P. 2 7 3 32) 5) 37 Six Months. 52 24 76 76 | ||