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).
Photograph showing a set of six big end bearings after a mileage and test bed run.
| Identifier | ExFiles\Box 115\1\ scan0213 | |
| Date | 16th December 1936 guessed | |
| 14 <- 1 TO 6 -> C.15 (25/30) UNIT. BIG END BEARINGS. STANDARD AC7 METAL. HAVE RUN 12,400 MILES IN 21 GIV AND 143 HOURS ON TEST BED, 83 HOURS OF WHICH AT 4,000 R.P.M. FOR OIL CONSUMPTION. | ||