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).
Letter confirming the durability of modified springs and requesting new spring designs for trial.
| Identifier | ExFiles\Box 154a\2\ scan0095 | |
| Date | 8th May 1939 | |
| 1305 EXPERIMENTAL DEPARTMENT. Rm {William Robotham - Chief Engineer} /FWK.17/JH. 8th. May, 1939. Thos. Firth & John Brown Ltd., Atlas & Norfolk Works, Sheffield. 1. For the attention of Mr. Briars. Dear Sirs, Confirming our telephone conversation of today with your Mr. Woolman, we are satisfied with the durability of the modified springs (FB.4364) you sent us for test and your spring department will accordingly receive instructions to proceed to modify the 13 sets in a similar manner. With regard to the remaining 42 pairs we would suggest that you design us a spring with a maximum stress of 33 tons.sq.in. and let us have two for trial as soon as possible. Yours faithfully, FOR ROLLS-ROYCE LTD. | ||