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).
Approval of a mock-up scheme for substituting a parallel roller bearing for a Timken bearing on the Senior Range Rear Axle.
| Identifier | ExFiles\Box 114\1\ scan0342 | |
| Date | 21th February 1941 | |
| Rm{William Robotham - Chief Engineer} / H.H. Release urge details: Axles 1015 TO Rm{William Robotham - Chief Engineer}/HH. c. Rm.{William Robotham - Chief Engineer} Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer}1/J.Mo.21.2.41. Senior Range Rear Axle. We fully approve your mock up scheme, PL.506, for substituting a parallel roller bearing for the Timken bearing on the off side of the differential. For a production job we would require a bearing of more capacity than the RALS 1 3/4, but the chances of failure are very remote and this is the best that can be done without extensive modification to the axle centre case. The mock up scheme on 9.B.V has the same size bearing. Rm{William Robotham - Chief Engineer}/FJH{Fred J. Hardy - Chief Dev. Engineer} | ||