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).
Confirming the Wraith speedometer drive layout incorporates recent fixes from the Bentley model.
| Identifier | ExFiles\Box 131\4\ scan0220 | |
| Date | 20th May 1937 | |
| To Hs.{Lord Ernest Hives - Chair} from Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} E.{Mr Elliott - Chief Engineer} Rm.{William Robotham - Chief Engineer} RHC.{R. H. Coverley - Production Engineer} By.{R.W. Bailey - Chief Engineer} 113 Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux}11/AP.20.5.37 WRAITH SPEEDOMETER DRIVE. The layout of the speedometer drive for the Wraith has got all the faults which have just been cleared up on the Bentley. The layout should follow the scheme RR.1083 to avoid complaints when in service. Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} | ||