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).
The risks of removing steering ball pins and a request to create a special extractor tool for the Wraith and Continental Ph.III.
| Identifier | ExFiles\Box 9\7\ 07-page062 | |
| Date | 26th June 1937 | |
| 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}1/AP.26.6.37 WRAITH STEERING. We believe that the standard method of removing a ball pin from a pendulum lever is to give the lever a sharp blow on the small end in an upward direction. We have noticed that an obstinate ball pin requires a considerable number of fairly heavy blows. While this has not caused any trouble with the plain rockershaft bearings used in the past, we think, that, with the roller bearings used on the Wraith steering gear, there is a risk of indenting either the race or the rockershaft. Will you please make an extractor for removing these ball pins. The same extractor could also be made to accommodate the larger ball use on the Continental Ph.III. steering. Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} | ||