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).
Top over-oiling on the Phantom III and the implications of modifying oil supply to the rockers.
| Identifier | ExFiles\Box 91\1\ scan0438 | |
| Date | 5th October 1936 | |
| [Handwritten annotations at top]: 300 P X Rhodes Swdtt Dodd is doing this. Hs.{Lord Ernest Hives - Chair} from E.{Mr Elliott - Chief Engineer} c. Sg.{Arthur F. Sidgreaves - MD} Wor.{Arthur Wormald - General Works Manager} By.{R.W. Bailey - Chief Engineer} Da.{Bernard Day - Chassis Design} Mx.{John H Maddocks - Chief Proving Officer} Hs{Lord Ernest Hives - Chair}/FD.{Frank Dodd - Bodies} [Handwritten next to distribution list]: E.2/HP.5.10.36. Pam Top Over-oiling on Phantom III. Referring to your report Hs{Lord Ernest Hives - Chair}/FD.{Frank Dodd - Bodies}17/KW.25.9.36, I think it would make the results more conclusive if we ran a further test with the oil passage way between the valve spring washer wedges stopped up in some way, and the oil supply to the rockers left on. Experience has shown that we must ensure a certain amount of oil supply to the valve stems, grummets, and valve stem tips. With insufficient lubrication we have had worn valve guides, squawks, and rusted and worn rocker pads, and hence we feel that any move towards cancelling the oil supply from the rocker should be approached with the greatest caution, particularly as it would be departing from the practice we are employing on Bentley and 25/30. E.{Mr Elliott - Chief Engineer} [Signature] | ||