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 engine failures and issues over quarterly and six-month periods.
| Identifier | ExFiles\Box 130\1\ scan0250 | |
| Date | 30th June 1935 guessed | |
| - 11 - 25 HP. PH.II. TOTAL. GRAND TOTAL. REMARKS. IGNITION FAILURES. June Quarter. C.C. 22 7 29) C.P. 6 12 18) 47 Mostly H.T. insulation failures. We understand better cables are being tested. Previous Quarter. C.C. 20 4 24) C.P. 6 11 17) 41 Six Months. 54 34 88 88 OIL LEAK FROM ENGINE, TAPPET DOORS ETC. June Quarter. C.C. 19 7 26) C.P. 60 11 71) 97 This job requires improving as the cork washers shrink in service. Previous Quarter. C.C. 7 5 12) C.P. 37 7 44) 56 Six Months. 123 30 153 153 PROPELLER SHAFT OIL LEAKS. June Quarter. C.C. 3 3 6) C.P. 2 2 4) 10 Previous Quarter. C.C. 3 4 7) C.P. 7 - 7) 14 Six Months. 15 9 24 24 VALVE MECHANISM CLATTER. June Quarter. C.C. 8 16 24) C.P. 2 10 12) 36 Ph.II. engines require improvement. We have no cure. Previous Quarter. C.C. 7 35 42) C.P. - 16 16) 58 Six Months. 17 77 94 94 | ||