New, closely coiled valve springs made from Swedish wire, requesting they be fitted to B-17 and B-9 test engines.
| Identifier | ExFiles\Box 158\4\ scan0122 | |
| Date | 15th February 1937 | |
| To HPS. {Horace Percy Smith - Experimental Factory Mgr} 1360 Rm {William Robotham - Chief Engineer} /Swd1.11/JH.15.2.37. VALVE SPRINGS. We now have some closely coiled valve springs produced by R.R. from Swedish wire bought direct from Sweden. These are to Rm. {William Robotham - Chief Engineer} 260 which other than the close coiling and the Swedish wire are identical to our standard Bentley springs EM.175. Will you please fit 6 on to B-17 unit and 6 on to B-9 unit both engines now being on test. Rm {William Robotham - Chief Engineer} /L.H.Swindall. | ||
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).