Proposed scheme to prevent oil from leaking down valve stems using a dome-shaped, soft aluminium washer.
| Identifier | ExFiles\Box 158\5\ scan0044 | |
| Date | 31th May 1939 | |
| 1360? To: By. {R.W. Bailey - Chief Engineer} c. to Hs. {Lord Ernest Hives - Chair} c. to Rm. {William Robotham - Chief Engineer} c. to Da. {Bernard Day - Chassis Design} c. to Da {Bernard Day - Chassis Design} /McS c. to By {R.W. Bailey - Chief Engineer} /NS {Norman Scott} c. to Rm {William Robotham - Chief Engineer} /GWH {George W. Hancock - Head Chateauroux} Piles SWDL {Len H. Swindell} Mx {John H Maddocks - Chief Proving Officer} 2/MG.31.5.39 SCHEME FOR PREVENTING OIL GOING DOWN VALVE STEMS Further to Rm {William Robotham - Chief Engineer} /Swdl. {Len H. Swindell} 7/MH. {M. Huckerby} 15.5.39. In view of the fact that Neoprene sealing washers are difficult to fit and may deteriorate in use, we have tried out an alternative in the form of a dome shaped, soft aluminium washer .022" thick. This washer is pressed flat when fitted into position, using modified top spring washer to E.CD.846. A set of these washers have been run 3000 miles on 27.G.VI. They form an effective oil seal, and show no sign of coming loose. They are very easily fitted, and do not present any difficulty when dismantling. Will By {R.W. Bailey - Chief Engineer} /NS {Norman Scott} please issue a detail drawing of this washer, so that further sets may be fitted on Experimental cars and also be used in cases of complaints of top over-oiling. Mx {John H Maddocks - Chief Proving Officer} 1 .312 DIA .022 THICK .500 RAD SPH .500 DIA | ||
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).