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).
Experimental scheme for Phantom III top overoiling to prevent oil passing down the valve stems.
| Identifier | ExFiles\Box 91\1\ scan0479 | |
| Date | 19th February 1937 | |
| 300 BY c. Rm.{William Robotham - Chief Engineer} Ew/Swdl.{Len H. Swindell} HPS.{Horace Percy Smith - Experimental Factory Mgr} E/JNR.{Charles L. Jenner}3/HP.19.2.37. Phantom III Top Overoiling. We send you herewith LeC.5533 showing an experimental scheme for raising the valve springs .500" above the floor of the cylinder head to prevent oil passing down the valve stems. The rocker pedestals are also packed up the same amount, and this was dealt with on a previous scheme LeC.5331, also the rocker cover. The valve springs and washers are standard. This is not suitable for production. Drawing to BY.{R.W. Bailey - Chief Engineer} Print to HPS.{Horace Percy Smith - Experimental Factory Mgr} E/JNR.{Charles L. Jenner} | ||