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).
Material composition of piston pins and recommending further fatigue testing.
| Identifier | ExFiles\Box 66\1\ scan0171 | |
| Date | 7th April 1928 | |
| E.{Mr Elliott - Chief Engineer} RG.{Mr Rowledge} Hs.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer} HL. from R.{Sir Henry Royce} c. to BJ. Wor.{Arthur Wormald - General Works Manager} Fl. R7/M7.4.28. ALL ENGINES - AERO & CAR - PISTON PINS. X. 5040 X. 8040 X. 7040 X. 3996 I understand that we are making no case-hardened pins but that they are all hardened and tempered to good stanton test, hard and tough, and of the same alloy steel that is used for valve springs. This is considered even better than road springs. I have pointed out to HL. that I should like to see more fatigue tests - Stanton, Upton Lewis and Izod. I give them I believe in order of merit. R.{Sir Henry Royce} | ||