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).
Request to change the material of the 20HP flywheel from mild steel to .6 carbon steel and issue a new piece number.
| Identifier | ExFiles\Box 74\3\ scan0280 | |
| Date | 13th July 1923 | |
| X4221 Mr D'Aeth. c. Hs.{Lord Ernest Hives - Chair} BY1-P13.7.23. 20HP. FLYWHEEL & CLUTCH. Will you kindly alter the material of the Flywheel G.50540 from mild steel to .6 carbon steel, altering the specification number and giving the flywheel a new piece number. This modification will commence at 751 onwards. The object of the new piece number is to ensure the Heat-treatment Department not being confused on the change of material. Will Mr D'Aeth kindly give the O.O. a new piece number at once, as they will then be able to alter the number on the die and go ahead. BY.{R.W. Bailey - Chief Engineer} | ||