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).
New design scheme for Phantom III valve rockers and issues with excessive oil flow.
| Identifier | ExFiles\Box 131\4\ scan0158 | |
| Date | 16th April 1937 | |
| 1113 To. from Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} RHC.{R. H. Coverley - Production Engineer} E.{Mr Elliott - Chief Engineer} De. By.{R.W. Bailey - Chief Engineer} Mx.{John H Maddocks - Chief Proving Officer} Rm{William Robotham - Chief Engineer}/CWH8/1.16.4.37. NEW TYPE P.III VALVE ROCKERS. The scheme for new rockers with deleted hydraulic tappets ec.5441 has been designed with the fault already known allowing too much oil to flow on to the valve stem. Although in this scheme there is no direct supply of oil to the rocker pad. It is exactly the same scheme as was tried out with the present rockers to reduce oil flow and failed. A scheme similar to the present one of fitting felt washers should be incorporated. Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} | ||