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).
The examination of Phantom III steering rocker shafts for signs of twisted splines.
| Identifier | ExFiles\Box 153\1\ scan0306 | |
| Date | 19th May 1939 guessed | |
| PHANTOM III. STEERING ROCKER SHAFTS. As requested, Depots have now examined a number of Phantom III cars for signs of twisted splines, with the following results :- Total examined. Splines found twisted. Paris 2 Nil Derby 5 Nil N. 34 1 -- -- 41 1 == == This represents only 2 1/2%. The one car which had the splines twisted also suffered from breakdown of the hardening of the inner races, and it is conceivable that much of our trouble with the Ph.III rollers has been due initially to impact loading which is transmitted more positively from the front wheels owing to lack of flexibility. | ||