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).
Log of important component failures with corresponding running times, excluding frame and springs.
| Identifier | ExFiles\Box 73\2\ scan0315 | |
| Date | 4th April 1924 guessed | |
| IMPORTANT FAILURES - (excluding Frame & Springs) Piece No. | Running time. hrs. mins. | Remarks. F.887 | 67 | 23 | Steering column tube broken immediately above worm. F.6979 | 67 | 23 | Cross-tie of steering column (lower section) broken at central lug. F.9702 | 67 | 23 | One arm of steering rocker shaft sheared. | 80 | 49 | Both bolts sheared, attaching steering arm to near side stub-axle. F.4272 | 111 | 48 | Steering pendulum broken at rocker shaft end. | 124 | 0 | Slight crack in rear lug of near side front spring rear anchorage. (see sketch 8. page 4) (photostat). | ||