Pre-ignition issues causing stretched exhaust valves, with a request for a replacement set and a proposal to try salt-cooled valves.
| Identifier | ExFiles\Box 11\4\ 04-page049 | |
| Date | 9th May 1932 | |
| To RHC. {R. H. Coverley - Production Engineer} From Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} 87941. Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} 3/MJ.9.5.32. 19-EX. IN FRANCE. Hancock has been having pre-ignition and has stretched all his exhaust valves. Will you please let me have another set of six E.82459. I believe they were 1/10" longer than standard. In case this trouble continues, we should like to be in a position to let him try some salt-cooled valves of the same dimension. I believe those we made had not the longer stem, but perhaps you would let me know. Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} | ||
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).