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).
Fitting PD.97 needle bearings to the Wraith bumper chassis.
| Identifier | ExFiles\Box 119\1\ scan0076 | |
| Date | 16th February 1938 | |
| To HBS. from Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} c. Rm{William Robotham - Chief Engineer}/Les.{Ivan A. Leslie} c. Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} δ 1024 Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer}3/MH.{M. Huckerby}16.2.38. WRAITH BUMPER CHASSIS. Will you please fit PD.97 needle bearings to the lower end of the pivot pins of the Wraith bumper chassis during the present rebuild. We believe that the existing yokes will be suitable with slight modification, and we have supplied the outer races and needles to W.S.C. Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} | ||