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).
Status update on the hardening process of SS tappets.
| Identifier | ExFiles\Box 154a\1\ scan0133 | |
| Date | 9th January 1929 | |
| - 2 - BY/10/G.9.1.29. and SS.{S. Smith} tappets are either already hardened or in process of being hardened. It will be seen that we have a considerable amount of this material being worked on at the moment. BY.{R.W. Bailey - Chief Engineer} By | ||