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).
Query seeking further details on the manufacturing differences between American and Woodhead springs, particularly regarding plate accuracy and heat treatment.
| Identifier | ExFiles\Box 43\2\ Scan064 | |
| Date | 24th July 1925 | |
| To Hs.{Lord Ernest Hives - Chair} from DA.{Bernard Day - Chassis Design} X3900 DAL/M24.7.25. AMERICAN SPRINGS. X.3900 X. 2628 The information you give in your Hs{Lord Ernest Hives - Chair}1/LG21.7.25. is what we were hoping to get, but in addition we should like to know whether the plates of the American spring are more accurately manufactured than the Woodhead spring, that is to say, whether the thickness is maintained all along the plate. Are they also hollow? Mr. Royce considers that the difference lies in the heat treatment of the steel. We suppose we have no means of verifying this? DA.{Bernard Day - Chassis Design} | ||