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).
Quarterly report detailing vehicle component failures and defects across two engine types.
| Identifier | ExFiles\Box 130\4\ scan0119 | |
| Date | 1st December 1936 guessed | |
| - 11 - 3½ LITRE. 4¼ LITRE. TOTAL. GRAND TOTAL. REMARKS. BIG END FAILURES. December Quarter. C.C. 3 2 5) 13 C.P. 7 1 8) Usually either No. 2 or No. 5 big end after long fast run. Extra lubrication from intermediate bearings is being introduced. Previous Quarter. C.C. 9 - 9) 13 C.P. 4 - 4) Six Months. 23 3 26 26 KNOCK IN TRANSMISSION. December Quarter. C.C. 27 27 54) 62 C.P. 4 4 8) Wear in wheel drivers or road wheel splines. Wheel drivers require improvement. Previous Quarter. C.C. 49 - 49) 50 C.P. 1 - 1) Six Months. 81 31 112 112 WILMOT-BREEDEN BUMPER DEFECTS. December Quarter. C.C. 5 1 6) 38 C.P. 22 10 32) Mostly rattle due to bob weights collapsing. Antimonial lead weights are being tried. F.J.H. Have depots now plenty of Antimony wts Previous Quarter. C.C. 28 - 28) 28 C.P. - - -) Six Months. 55 11 66 66 DEFECTIVE SHOCK DAMPERS. (CONTROLLABLE). December Quarter. C.C. 26 9 35) 36 C.P. 1 - 1) 8 knock. 1 governor. Remainder bleed, and cure oil leaks. Previous Quarter. C.C. 24 - 24) 24 C.P. - - -) Six Months. 51 9 60 60 | ||