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 reported vehicle system faults and complaints over a six-month period.
| Identifier | ExFiles\Box 47\3\ Scan334 | |
| Date | 1st December 1931 guessed | |
| -6- CENTRAL LUBRICATION. 20 HP. 25 HP. PH.I. PH.II. TOTAL. GRAND TOTAL. REMARKS. December Quarter. C.C. - 9 - 20 29 } 29 These are mostly miscellaneous W.P. - - - - troubles such as replacing drip plugs, Previous " C.C. - 4 - 16 20 } 29 re-making joints and clearing pipe W.P. - 1 - 8 9 } lines. Six months. - 14 - 44 58 58 TOTAL DYNAMO COMPLAINTS. December Quarter. C.C. 3 16 - 13 32 } 35 Half charge Scheme is now W.P. 1 - - 2 3 } standardised. Previous " C.C. 1 12 - 6 19 } 21 W.P. 1 1 - - 2 } Six months. 6 29 - 21 56 56 DYNAMO FAILURES. December Quarter. C.C. - 5 - 2 7 } 7 Minor adjustments to brush gear W.P. - - - - usually overcomes these troubles. Previous " C.C. - 3 - 1 4 } 4 W.P. - - - - Six months. - 8 - 3 11 11 DYNAMO NOISY. December Quarter. C.C. 3 8 - 7 18 } 22 Minor adjustments to brush gear W.P. 1 - - 3 4 } usually overcomes these troubles. Previous " C.C. 0 8 - 3 11 } 13 W.P. 1 1 - - 2 } Six months. 5 17 - 13 35 35 | ||