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 breakdown of vehicle springing complaints by model and type of issue.
| Identifier | ExFiles\Box 47\3\ Scan342 | |
| Date | 1st December 1931 guessed | |
| -14- 20 HP. 25 HP. PH.I. PH.II. TOTAL. GRAND TOTAL. REMARKS. TOTAL SPRINGING COMPLAINTS. December Quarter. C.C. 8 42 18 65 133 } 134 W.P. - - 1 - 1 } Previous " C.C. 13 38 28 60 139 } 139 W.P. - - - - - } Six months. 21 80 47 125 273 273 SPRINGS NOT COMFORTABLE. December Quarter. C.C. 7 33 14 53 107 } 107 W.P. - - - - - } Previous " C.C. 6 21 25 48 100 } 100 W.P. - - - - - } Six months. 13 54 39 101 207 207 SPRINGS WEAK. December Quarter. C.C. - 3 2 11 16 } 16 W.P. - - - - - } Previous " C.C. 4 8 - 11 23 } 23 W.P. - - - - - } Six months. 4 11 2 22 39 39 SPRINGS - FRONT BROKEN. December Quarter C.C. 1 - 1 - 2 } 2 W.P. - - - - - } Previous " C.C. 3 - 1 - 4 } 4 W.P. - - - - - } Six months. 4 - 2 - 6 6 Ph.I. complaints can be definitely cured by grooving springs and modifying shock dampers. 20/25 HP. We can cure many complaints by modifying the shock dampers grooved springs are an advantage. In exceptional cases low rating springs are necessary. Ph.II. Increased lubrication & higher shock damper loads effect a cure. Mostly due to insufficient clearance being allowed but stronger springs are now being fitted and complaints should die out except when body weights are excessive. | ||