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 springing complaints across various models, detailing issues and remedial actions over a six-month period.
| Identifier | ExFiles\Box 47\3\ Scan202 | |
| Date | 30th June 1931 guessed | |
| -5- 20 HP. 25 HP. PH.I. PH.II. TOTAL. GRAND TOTAL. REMARKS. TOTAL SPRINGING COMPLAINTS. June Quarter. C.C. 13 31 13 42 99 } 101 W.P. - 1 - 1 2 } Previous " C.C. 10 22 17 35 84 } 86 W.P. 1 - - 2 2 } Six months. 24 55 30 78 187 187 The Experimental Dept. are now investigating springing troubles generally. SPRINGS NOT COMFORTABLE. June Quarter. C.C. 3 18 12 27 60 } 61 W.P. - - - 1 1 } Previous " C.C. 3 13 11 16 43 } 43 W.P. - - - - Six months. 6 31 23 44 104 104 20 HP. 20/25 HP. and PH.I. Definitely improved by fitting grooved springs and modifying shock dampers. Low rating springs and modified shock dampers are now available for dealing with exceptional complaints. PH.II. Increased lubrication to the rear spring leaves is being tried. SPRINGS WEAK. June quarter. C.C. 3 9 - 13 25 } 25 W.P. - - - - - } Previous " C.C. 3 6 2 17 28 } 28 W.P. - - - - Six months. 6 15 2 30 53 53 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. SPRINGS - FRONT BROKEN. June Quarter. C.C. 6 - 1 - 7 } 7 W.P. - - - - - } Previous " C.C. 3 - 2 - 5 } 6 W.P. 1 - - - 1 } Six months. 10 - 3 - 13 13 | ||