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).
Cable detailing the results of testing various materials for springs.
| Identifier | ExFiles\Box 176\3\ img096 | |
| Date | 19th April 1940 | |
| - 2 - BY.2/HR.19.4.40. Continued:- I have cabled Oy. as follows:- "Have tried 18/8 springs as hard drawn wire not very successfully stop Prefer to use chrome vanadium or silico manganese stop Nickel plated point nought nought one five thick after coiling but before heat treatment stop This most successful." BY.{R.W. Bailey - Chief Engineer} By | ||