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).
Implementation of a new sealing washer feature for valve springs on various engine units.
| Identifier | ExFiles\Box 158\5\ scan0045 | |
| Date | 9th June 1939 | |
| 1860 To By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} c. Da{Bernard Day - Chassis Design}/Jnr.{Charles L. Jenner} c. By/CS. c. Da{Bernard Day - Chassis Design}/MCS. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}2/MH.{M. Huckerby}9.6.39. VALVE SPRINGS. Having tested the sealing washers in the top spring cap on the Bentley V and the Wraith III to prevent oil getting down the valves (inlet), we should like you to incorporate this feature on the double springs which have been instructed for trial on the B.60, B.80 and B.V. units (memo By/CS.1/EH.23.5.39). The sealing scheme in question is to ECD.846 with EW.2260 alum washers. This scheme reduces the necessity for the bottom grummet which, although at the present stage we dare not delete from Wraith III and Bentley V, consider we should start off on the B.60 and B.80 without the grummet which is at present included in the double spring arrangement. This would simplify the double bottom washers at present used and the location of the double springs together with the retaining of the guide could be carried out by a single bottom washer. Will you please instruct this to be schemed and detailed to replace the present double spring arrangement. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||