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).
Modified cylinder core vent for the Wraith, considering its application to the Bentley and 25/30 models.
| Identifier | ExFiles\Box 8\6\ 06-page11 | |
| Date | 30th September 1937 | |
| 619 By.{R.W. Bailey - Chief Engineer} from Rm.{William Robotham - Chief Engineer} Rm{William Robotham - Chief Engineer}2/R.30.9.37. WRAITH MODIFIED CYLINDER CORE VENT. With reference to RHC{R. H. Coverley - Production Engineer}/Vs.{J. Vickers}2/MJ.22.9.37, attached are Swindall's observations on the above modification. Unless the Design has any objection to incorporating this on the Bentley and 25/30, we think it should go ahead. Rm.{William Robotham - Chief Engineer} | ||