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).
Request to examine cars with raised crown pistons for cylinder bore wear.
| Identifier | ExFiles\Box 132\5\ scan0094 | |
| Date | 2nd May 1939 | |
| 1123. CTS.{C. Trot Salt - Carburation} from Rm.{William Robotham - Chief Engineer} Rm{William Robotham - Chief Engineer}9/R.2.5.39. We want to be sure that we are not going to run into cylinder bore wear with the raised crown piston. Will you please examine for bore wear the cars which have been running round here on hack work with raised crowned pistons, to make sure that this is not above the average. Rm.{William Robotham - Chief Engineer} | ||