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).
Modifications to the Wraith III steering system to reduce friction, simplify machining, and cut costs.
| Identifier | ExFiles\Box 9\7\ 07-page043 | |
| Date | 15th March 1937 | |
| SECRET 650 To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer}4/AP.15.3.37. WRAITH III. STEERING We have found that on the steering of the Wraith we require less friction from the ball joints and a higher rating with more travel and no set-up load on the rear S.S. tube joint. We attach prints Rm{William Robotham - Chief Engineer} 337/8/9 showing the modifications we suggest to achieve the desired result. We have taken the opportunity of reducing cost by simplifying machining as much as possible. Will you please detail these, fit to Wraith III. and make two additional sets for fitting to 24.G.VI. and 25.G.IV. Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} | ||