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).
General remarks comparing the benefits of an intermediate propeller shaft bearing versus hypoid gearing in various car models.
| Identifier | ExFiles\Box 114\1\ scan0151 | |
| Date | 15th September 1938 | |
| -2- Da{Bernard Day - Chassis Design}/Ev{Ivan Evernden - coachwork}8/N.15.9.38 Cont'd.{John DeLooze - Company Secretary} General Remarks. (1) The attached print will shew that in the case of Close Coupled cars such as B.III. and B.50 the introduction of the intermediate propeller shaft bearing has done more to reduce the height of the pot than the hypoid. A large amount of hypoid was of great value prior to this inovation. (2) We cannot get the Limousine rear heel-board so far back relative to the axle as on wide frame cars such as P.III. and Wraith III. especially when the cross feet extend to the rear axle. Because of this and the steeper slope of the propeller shaft on bump, the pot over the latter is short in any case. (3) The increase in the length of the nose of the semi-floating axle over that of the fully floating one nullifies some of the gain in hypoid of .850". (4) The intermediate bearing has done more good than hypoid could ever have done. Ev.{Ivan Evernden - coachwork} | ||