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).
Secret memo detailing experiments for the 17-G4 engine suspension system, including the use of rubber shoes.
| Identifier | ExFiles\Box 104\1\ scan0056 | |
| Date | 30th May 1929 | |
| Hs.{Lord Ernest Hives - Chair} from E.{Mr Elliott - Chief Engineer} X 5005 SECRET. E1/M30.5.29. Copy to Sg.{Arthur F. Sidgreaves - MD} By.{R.W. Bailey - Chief Engineer} 17-G4 ENGINE SUSPENSION. X 5005 We send you herewith LeC. 2713, shewing a further experiment that R.{Sir Henry Royce} would like you to make in connection with the above. Instead of a solid front engine mounting we now shew two rubber shoes of the SS.{S. Smith} pattern, to be used in combination with rear feet LeC. 2702. A further experiment is to include also the front pivot mounting on the cross member.. This should not be attempted however until the four point mounting has been tried. E.{Mr Elliott - Chief Engineer} | ||