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 manufacture a new set of Bentley valve springs with specified free lengths to address valve bounce issues.
| Identifier | ExFiles\Box 88\4\ scan0073 | |
| Date | 14th June 1934 | |
| To RHC.{R. H. Coverley - Production Engineer} X 254 Hs{Lord Ernest Hives - Chair}/Smth.5/KW.14.6.34. Bentley Valve Springs. We are experiencing valve bounce trouble on the Bentley when fitted with Halford tappets and wish to put up the valve spring loadings to overcome this. Will you therefore make us a set of springs to EB.507/8, but with the following free lengths :- Inner spring free length 1.638. Outer " " " 2.080. Hs{Lord Ernest Hives - Chair}/Smth. | ||