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).
Report tabulating component failures over a six-month period for 3 1/2 Litre and 4 1/4 Litre models.
| Identifier | ExFiles\Box 130\4\ scan0125 | |
| Date | 12th March 1937 guessed | |
| - 12 - 3 1/2 LITRE. 4 1/4 LITRE. TOTAL. GRAND TOTAL. REMARKS. FAILURE OF REAR WHEEL DRIVERS. March Quarter. C.C. - - -) C.P. 3 - 3) 3 Wheel drivers are now being strengthened. Previous Quarter. C.C. 2 1 3) C.P. 1 - 1) 4 Six Months. 6 1 7 7 FAILURE OF REAR AXLE SHAFTS. March Quarter. C.C. - - -) C.P. - - -) - Previous Quarter. C.C. 2 - 2) C.P. - - -) 2 Six Months. 2 - 2 2 THUMP IN ENGINE OR SINKAGE IN MAIN BEARINGS. March Quarter. C.C. - 2 2) C.P. - 13 13) 15 Due to collapsing of Hall's metal main bearings. Full report sent to Experimental Department. Previous Quarter. C.C. - 2 2) C.P. - 5 5) 7 Six Months. - 22 22 22 EXCESSIVE WEAR OF MAIN BEARINGS. (APART FROM COLLAPSING.) March Quarter. C.C. - - -) C.P. - - -) - Previous Quarter. C.C. 1 - 1) C.P. 3 - 3) 4 Six Months. 4 - 4 4 | ||