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).
Experimental spring stiffness and alternative spring specifications.
| Identifier | ExFiles\Box 49\3\ Scan057 | |
| Date | 1st September 1921 | |
| To R. {Sir Henry Royce} from DA. {Bernard Day - Chassis Design} -3- DA {Bernard Day - Chassis Design} 1/G12/9/21 Contd. the springs should be ordered to these figures. There is one other point, HS. {Lord Ernest Hives - Chair} reported that he carried a 1300 lbs spring. This is evidently the original experimental spring which was too stiff. My records shew that there are two springs - 1071 and 1057 lbs. respectively, which have been in the Works some time. DA. {Bernard Day - Chassis Design} | ||