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).
On Bentley exhaust valve failure due to leaded fuel and a request for replacements made from Firth's crown steel.
| Identifier | ExFiles\Box 88\4\ scan0011 | |
| Date | 30th August 1933 | |
| x254. To RHC.{R. H. Coverley - Production Engineer} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}10/KT.30.8.33. BENTLEY EXHAUST VALVES. We have had a failure of the Bentley exhaust valves due to leaded fuel. These valves are in Silichrome steel. We should like to try some in Firth's crown steel. Will you please make up two sets of Bentley exhaust valves in this material. Piece Number EB.165. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||