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 avoidance of fitting high compression pistons to pre 'M' Series cars.
| Identifier | ExFiles\Box 89\5\ scan0045 | |
| Date | 2nd June 1939 | |
| 261. Hd.{Mr Hayward/Mr Huddy} from Rm.{William Robotham - Chief Engineer} Rm{William Robotham - Chief Engineer}2/R.2.6.39. Attached is copy of a letter I have written to Mr. Jackson, also Mr. Jackson's letter. We are trying to avoid fitting high compression pistons to pre 'M' Series cars as, otherwise, we shall be inundated with demands to increase the power output on engines which will not be able to stand up to the modifications. Rm.{William Robotham - Chief Engineer} | ||