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).
Comparison of axle stress between existing R.R. practice and Rippletto Salisbury, with a recommendation to increase the Rippletto diameter.
| Identifier | ExFiles\Box 114\1\ scan0260 | |
| Date | 16th November 1939 | |
| 16.11.39. EXISTING R.R. AXLE STRESS. 1st. gear 44,000 Direct 15,000 RIPPLETTO SALISBURY. 1st. gear 53,500 Direct 16,530 Rippletto diameter should be increased from 0.9687 to 1.036" i.e. 0.067 in dia. to bring stress to R.R. practice. | ||