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 summary of vehicle faults related to brakes, servos, and clutches over a six-month period.
| Identifier | ExFiles\Box 130\1\ scan0226 | |
| Date | 14th May 1935 guessed | |
| - 3 - BRAKES INEFFICIENT. 25 HP. PH.II. TOTAL. AND TOTAL. REMARKS. March Quarter. C.C. 71 31 102) C.P. 51 7 58) 160 Previous Quarter. C.C. 84 34 118) C.P. 25 11 36) 154 Inefficiency on 20/25 is usually due to oil on servo. Six Months. 231 82 314 314 Oil feed to servo is now deleted on new cars and Depot Sheet Hd.{Mr Hayward/Mr Huddy}253 has been issued, instructing retrospective action. Depot Sheet Hd.{Mr Hayward/Mr Huddy}252 describes treatment for inefficient servos. Oil guards to Depot Sheets Hd.{Mr Hayward/Mr Huddy}224 and Hd.{Mr Hayward/Mr Huddy}232 are being fitted. SERVO INEFFICIENT, ALSO JAGGERS AND GRABS. March Quarter. C.C. 17 5 22) C.P. 18 4 22) 44 Previous Quarter. C.C. 27 11 38) C.P. 12 9 21) 59 Six Months. 74 29 103 103 TOTAL CLUTCH COMPLAINTS. March Quarter. C.C. 122 15 137) C.P. 15 12 27) 164 Previous Quarter. C.C. 97 20 117) C.P. 13 6 19) 136 Six Months. 247 53 300 300 CLUTCH JAGGERS. March Quarter. C.C. 40 2 42) C.P. 7 - 7) 49 An improvement can be effected by fitting new RAD.II type fabrics. This material is now available for all PH.II and 20/25 HP. cars. See Depot Sheets Hd.{Mr Hayward/Mr Huddy}185 and Hd.{Mr Hayward/Mr Huddy}196. Modification to synchromesh mechanism reduces jagger on second gear. Previous Quarter. C.C. 14 4 18) C.P. 1 - 1) 19 Six Months. 62 6 68 68 | ||