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).
Request to determine the Brinell hardness of eroded valve seats after endurance tests.
| Identifier | ExFiles\Box 96\2\ scan0117 | |
| Date | 12th June 1936 | |
| To Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell} x 354 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}19/KW.12.6.36. We should like to know the Brinell of the valve seats which have eroded on all endurance tests. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||