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).
The condition of engine valves after a 15,000-mile run, detailing clearances and materials.
| Identifier | ExFiles\Box 88\4\ scan0180 | |
| Date | 6th October 1936 | |
| x754 To By.{R.W. Bailey - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell}17/KW.6.10.36. Valves as run 15,000 miles on 6-B-IV. Further to Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}8/KW.28.9.36. Inlet valves EB.279 S/SLV with diametrical clearance in the guides between .0015-.002" limits. Nos. 4, 5 & 6 exhaust valves were in S/SLV stellited on tips and seats, and of the new strengthened type of head LeC.5141. The diametrical clearance in the guides is .0015-.002" limits. Hs{Lord Ernest Hives - Chair}/L.H.Swindall. | ||