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).
Inquiry regarding the introduction of Hykro steel for Bentley crankshafts and the corresponding chassis number.
| Identifier | ExFiles\Box 146\5\ scan0357 | |
| Date | 14th May 1940 | |
| By.{R.W. Bailey - Chief Engineer} from Rm.{William Robotham - Chief Engineer} Rm.{William Robotham - Chief Engineer}3/ML.14.5.40. Can you please tell me whether Hykro steel was ever introduced on production on Bentley crankshafts? If so, on what chassis number the first shaft made of this steel was introduced. Rm.{William Robotham - Chief Engineer} | ||