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).
Summary table of vehicle defects over a six-month period, categorized by issue and engine size.
| Identifier | ExFiles\Box 130\4\ scan0134 | |
| Date | 31th March 1937 guessed | |
| - 7 - 3½ LITRE. 4¼ LITRE. TOTAL. GRAND TOTAL. REMARKS. EXHAUST SYSTEM RATTLES. March Quarter. C.C. 5 C.P. 5 5 5 10) 10) 20 Mainly due to flexible suspension brackets. Previous Quarter. C.C. 27 C.P. 1 5 1 32) 2) 34 Six Months. 38 16 54 54 DEFECTIVE SPEEDOMETER. March Quarter. E.C. 18 C.P. - 40 - 58) -) 58 Trip mechanism has now been improved to reduce failures. Previous Quarter. C.C. 15 C.P. 1 22 2 37) 3) 40 Six Months. 34 64 98 98 DEFECTIVE HEADLAMPS. March Quarter. C.C. 13 C.P. - 6 - 19) -) 19 Chiefly defective dipper gear, poor contacts or broken feed wire. Additional fuse to protect headlamp is being fitted. Retrospective action has been instructed to Depots. Improved headlamp now standardised. Previous Quarter. C.C. 20 C.P. - 2 - 22) -) 22 Six Months. 33 8 41 41 WATER LEAKS FROM ENGINE. March Quarter. C.C. 6 C.P. 37 4 10 10) 47) 57 Chiefly from No. 2 water jacket plate. This requires improvement. Joint washers in different material to be tried. Previous Quarter. C.C. 1 C.P. 54 1 6 2) 60) 62 Six Months. 98 21 119 119 | ||