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).
Requesting official instructions for a steering modification on the Wraith model following experimental tests.
| Identifier | ExFiles\Box 9\7\ 07-page091 | |
| Date | 8th November 1937 | |
| 650 Da.{Bernard Day - Chassis Design} from Rm.{William Robotham - Chief Engineer} c. By.{R.W. Bailey - Chief Engineer} Rm{William Robotham - Chief Engineer}6/R.8.11.37. Experimental tests indicate that a marked improvement can be made in the steering by a slight modification at the angle at which the yoke pieces are machined. The attached drawing shows what has been done. We have asked HPS.{Horace Percy Smith - Experimental Factory Mgr} to ensure that the first six Wraith cars are machined to this drawing, but would like you to put the instructions through in an official manner. Rm.{William Robotham - Chief Engineer} | ||