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).
Laboratory report on the chemical analysis and heat treatment of a valve rocker.
| Identifier | WestWitteringFiles\P\2July1926-September1926\ Scan116 | |
| Date | 30th August 1926 | |
| Hs.{Lord Ernest Hives - Chair} C O P Y. Laboratory. H12/EA30.8.26. Report No. L524 Re: Valve Rocker sent in for examination 28.8.26. Analysis. Carbon ---------- 0.36% Manganese -------- 0.72% Nickel ----------- 3.60% The material was found to be satisfactory as regards the analysis and structure, but was observed to be on the soft side. Upon re-heat-treatment the hardness was quite satisfactory. Hl. | ||