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).
Directive to alter exhaust valve specifications for various car and engine units due to failures.
| Identifier | ExFiles\Box 96\2\ scan0167 | |
| Date | 12th November 1936 | |
| 354 To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}11/AP.12.11.36 EXHAUST VALVES. In view of the failures with S/SLV. exhaust valves will you please alter the following specifications and fit KE.965 exhaust valves - PHANTOM UNIT. Nos.6, 9 and 10. To be fitted with the strengthened KE.965 exhaust valves E.88358. NO.8. CONTINENTAL HEADS LATER TO BE FITTED IN NO.14.UNIT. Strengthened KE.965 valves E.88447. 25/30. C.16. UNIT. Standard KE.965 E.61073 1/2 BENTLEY B.3.16 Strengthened KE.965 EB.2970. Any S/SLV. exhaust valves in the process of being made should be stopped. ------------------ Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||