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).
Alteration of the castor angle on the Wraith III steering.
| Identifier | ExFiles\Box 9\7\ 07-page051 | |
| Date | 23th April 1937 | |
| 650 To By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} c. E.{Mr Elliott - Chief Engineer} c. Da.{Bernard Day - Chassis Design} c. Ev.{Ivan Evernden - coachwork} c. HPS.{Horace Percy Smith - Experimental Factory Mgr} Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer}4/AP.23.4.37 WRAITH III. STEERING. We find that on the Wraith chassis we require 1 1/2° of castor angle to give a satisfactory amount of self centring and stability to the steering. We wish this angle to be used on all future Wraith chassis so will you please alter the drawings to suit. We attach a print of Rm.{William Robotham - Chief Engineer}325 shewing the angles to which the yoke pieces of the existing cars have been altered. Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} | ||