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).
Quarterly statistical report on vehicle complaints regarding brakes, servos, and clutches.
| Identifier | ExFiles\Box 130\1\ scan0383 | |
| Date | 31th March 1936 guessed | |
| - 3 - BRAKES INEFFICIENT. 25 HP. PH.II. TOTAL GRAND TOTAL. REMARKS. March Quarter. C.C. 65 C.P. 31 29 10 94) 41) 135 Previous Quarter. C.C. 77 C.P. 30 23 5 100) 35) 135 Six Months. 203 67 270 270 20/25 HP. 35° servo cams improve efficiency and are used in cases of complaint. See Depot Sheet No. Hd.{Mr Hayward/Mr Huddy}284. Inefficiency may also be due to oil on servo. Oil feed to servo is now deleted on new cars and Depot Sheet No. Hd.{Mr Hayward/Mr Huddy}253 has been issued instructing retrospective action. Depot Sheet No. Hd.{Mr Hayward/Mr Huddy}252 describes treatment for inefficient servos. Oil guards to Depot Sheets Nos. Hd.{Mr Hayward/Mr Huddy}244 and 232 are being fitted. SERVO JAGGERS AND GRABS. March Quarter. C.C. 19 C.P. 11 12 3 31) 14) 45 Previous Quarter. C.C. 21 C.P. 3 7 1 28) 4) 32 Six Months. 54 23 77 77 TOTAL CLUTCH COMPLAINTS. March Quarter. C.C. 153 C.P. 51 29 9 182) 60) 242 Previous Quarter. C.C. 128 C.P. 21 18 8 146) 29) 175 Six Months. 353 64 417 417 CLUTCH JAGGERS. March Quarter. C.C. 50 C.P. 29 4 1 54) 30) 84 Majority of these are on cars without torque reaction dampers. Previous Quarter. C.C. 11 C.P. 3 2 - 13) 3) 16 Modification to synchromesh mechanism reduces jagger on second gear. Six Months. 93 7 100 100 Torque reaction dampers are being fitted retrospectively. | ||