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).
Testing and standardisation of crankshafts for 25/30 & Bentley models.
| Identifier | ExFiles\Box 85\5\ scan0129 | |
| Date | 12th March 1937 | |
| 217. To Roy.{Sir Henry Royce} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}1/AP.12.3.37. 25/30 & Bentley Crankshafts. In reply to memo Roy{Sir Henry Royce}/Ms.3/P. 9.3.37. The first experimental Bentley unit fitted with the larger crankshaft will not be on test for several weeks and will require extensive tests on the road before standardising. We would therefore say that on R.2. series 25/30.HP. and L. series Bentley we shall still have the standard crankshaft. If, however, the tests are completed sooner than expected and the large crankshaft introduced on Bentley during L. series, then the remainder of the standard cranks can be used up on 25/30 as you suggest. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||