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 for valves, referencing mileage data from Springfield.
| Identifier | ExFiles\Box 35\3\ scan 053 | |
| Date | 23th November 1923 | |
| WOR.{Arthur Wormald - General Works Manager} from Hs.{Lord Ernest Hives - Chair} X2764 Hs{Lord Ernest Hives - Chair}3/LE23.11.23. / MATERIAL FOR VALVES. x2764 x4224 With reference to the attached std. sheet. R.{Sir Henry Royce} and CJ. have a recently signed the Springfield Standardisation Sheet for this material. In OY12/E103023., Springfield state that they have had valves of this material running for 18 months - on the std. sheet No.23 they give the mileage as - 5,700 for one set - 11,600 for another set - 17,360 for the third set. Hs.{Lord Ernest Hives - Chair} | ||