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).
Deciding on a 1.750 inch diameter for the B.50 and Wraith model's half-floating rear axle shaft.
| Identifier | ExFiles\Box 7\3\ X 602 Axle Rear-page49 | |
| Date | 29th December 1937 | |
| K Grya ~~Da{Bernard Day - Chassis Design}/Adv.~~ ~~G.{Mr Griffiths - Chief Accountant / Mr Gnapp} Dar.~~ G.{Mr Griffiths - Chief Accountant / Mr Gnapp} Jus. ~~Gr.{George Ratcliffe} De/Insp.~~ BY.10/G.29.12.37. 602 also 1044 B.50 and WRAITH. HALF FLOATING REAR AXLE. see 1015 See 1044 Referring to Da{Bernard Day - Chassis Design}/HB.{C. E. Harcombe}27/G.16.12.37. after weighing up the information conveyed in Da{Bernard Day - Chassis Design}/Gry.{Shadwell Grylls}2/AF.25.10.37. and Da{Bernard Day - Chassis Design}/Gry.{Shadwell Grylls}5/MH.{M. Huckerby}22.12.37., I am satisfied that we should use 1.750 as the diameter of the axle shaft at the large end, where it fits into the ball bearing. This is possibly on the large side, but we must above all things be safe, and run no risk of fracture at this point. BY.{R.W. Bailey - Chief Engineer} PY | ||