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).
Valve failure, including details of a cracked exhaust valve being sent for inspection.
| Identifier | ExFiles\Box 83\1\ scan0475 | |
| Date | 25th April 1937 | |
| Handwritten notes at top: Files, SWDL{Len H. Swindell}, 200a HOTEL DE FRANCE. CHATEAUROUX. Indre. France. Rm{William Robotham - Chief Engineer}/GWH{George W. Hancock - Head Chateauroux}/IMW{Ivan M. Waller - Head of Chateauroux}/6/JAB. 25th April 1937. To. Mr. GWH.{George W. Hancock - Head Chateauroux} 6. B. IV. Valve Failure. We have received your memo.Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}15/AP.22.4.37. the contents of which have been noted. We will return the old head and fittings when the new one is received and fitted. We had already re-cut the damaged seat and ground in the others before we knew you were sending a new head. We are sending you straight away, No II Exhaust valve which is cracked and about to fail, as we think this may be of immediate interest to you. The mileage of this valve is 8.169. We are sending with it the broken valve No 6 (No 3 Cylinder) which is one of the original valves and has covered 14.615 miles in France. Both are KE.965. The ignition timing was checked 4º B T D C earlier in the running. We will check it again before running is resumed. There have been no indications of the mixture being weak at high speeds, but we will also give this our attention. ------------- Rm{William Robotham - Chief Engineer}/GWH{George W. Hancock - Head Chateauroux}/IMW.{Ivan M. Waller - Head of Chateauroux} Franklin. Waller | ||