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).
Required modification to the air bleed on Wraith carburettors.
| Identifier | ExFiles\Box 7\4\ X 608 Carburetter-page22 | |
| Date | 6th May 1938 | |
| 608 Rm{William Robotham - Chief Engineer}/GR.{George Ratcliffe} from Rm.{William Robotham - Chief Engineer} c. Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} Rm{William Robotham - Chief Engineer}2/R.6.5.38. With reference to your report on Wraith carburettors, we note your remark that all carburettors require a modification to Rm.{William Robotham - Chief Engineer}467 to the air bleed. Will you please see that this is carried out as soon as possible. Rm.{William Robotham - Chief Engineer} | ||