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).
Notice of material modification and heat treatment for R.R.F.X. Rocker Shafts.
| Identifier | ExFiles\Box 43\3\ Scan086 | |
| Date | 14th December 1926 | |
| Y6003 BY/EL. c. Hs.{Lord Ernest Hives - Chair} c. Wd.{Mr Wood/Mr Whitehead} BY9/H.{Arthur M. Hanbury - Head Complaints} 14.12.26 RECEIVED R.R.F.X. ROCKER SHAFTS E.27922/3. ---------------------------------- Please note that we should modify the above material at once from 2031 B, which represents our standard quality, to Tube to .4 Carbon Steel, which should be specified as "T.5. Air Ministry". Please also note that this tube should be heat-treated to give a Brinell of 249 to 269. BY.{R.W. Bailey - Chief Engineer} By | ||