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).
Proposal for a sodium-cooled exhaust valve design to overcome engine overheating and detonation at 3000 rpm.
| Identifier | ExFiles\Box 123\5\ scan0142 | |
| Date | 31th October 1938 | |
| DA{Bernard Day - Chassis Design}/MS. (Struck through) 1044 c. Rm.{William Robotham - Chief Engineer} DA.{Bernard Day - Chassis Design}15/G.31.10.38. Piler SWDL{Len H. Swindell} B.60. ENGINE. Please receive herewith PD.290 shewing design for a sodium cooled exhaust valve. It is proposed to try a set with the object to overcome the overheating which occurs at 3000 r.p.m. This is a phenomena since the detonation comes on with full load only at this speed, above or below in revs. it does not occur. DA.{Bernard Day - Chassis Design} | ||