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).
Standardisation Sheet for Wheel Drivers and recommending against hardening the bores.
| Identifier | ExFiles\Box 84\4\ scan0233 | |
| Date | 11th June 1937 | |
| By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} c. Hs.{Lord Ernest Hives - Chair} c. E.{Mr Elliott - Chief Engineer} c. Da.{Bernard Day - Chassis Design} c. Hdy.{William Hardy} c. RHC.{R. H. Coverley - Production Engineer} 202 Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}10/AP.11.6.37 We recently issued a Standardisation Sheet for Wheel Drivers to Ex.25109/A, to overcome the complaints of knocks. This drawing shows a driver hardened on the external teeth and also in the bore. We have spoken to RHC.{R. H. Coverley - Production Engineer} who thinks it would be very difficult to produce accurate drivers with hardened bores. As we do not get trouble on present production drivers in S/N. due to wear of the soft bore, we recommend that the new driver, which we have just standardised and which is of a better material, namely S/ZRX, should be left soft in the bore and the drawing altered accordingly. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} | ||