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 alteration of the B.V. steering yoke castor angle.
| Identifier | ExFiles\Box 100\2\ scan0089 | |
| Date | 21th December 1938 | |
| 450 To By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} c. By/NS.{Norman Scott} c. Da.{Bernard Day - Chassis Design} c. HFS. Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer}7/MH.{M. Huckerby}21.12.38. B.V. STEERING. At present the B.V. yoke details call for a castor angle of 1½° while B.50 and Silver Wraith have 3°. 8.B.V. now running in France has the previous type of yoke with 0° and is reported to be satisfactory. In view of the above we think it is quite safe to alter the B.V. angle to 3° for all future B.V. chassis, including the production 50. Will you please alter the yoke details accordingly and will HFS. please incorporate the new angle on any yokes which have not already been bored for the pivot pin. Yokes which have been bored for 1½° castor and the original size pivot pin can be converted to 3° while boring to suit the strengthened pivot pin. Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} | ||