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).
Details on the application of ball bearings to the steering rocker shaft roller for the Phantom 111.
| Identifier | ExFiles\Box 95\1\ scan0508 | |
| Date | 8th December 1938 | |
| De. from De/DB.{Donald Bastow - Suspensions} C.c. Ex. Rm{William Robotham - Chief Engineer}/FJH{Fred J. Hardy - Chief Dev. Engineer}, Da{Bernard Day - Chassis Design}/DB.{Donald Bastow - Suspensions} 350 Da{Bernard Day - Chassis Design}/DB.{Donald Bastow - Suspensions}25/G.8.12.38. BALL BEARINGS IN ROLLER ON STEERING ROCKER SHAFT. PHANTOM 111. PD.330 33o FD.{Frank Dodd - Bodies} shows the application of ball bearings to the roller on the steering rocker shaft of the Phantom 111. This has been done in such a way that no alteration to the rocker shaft is necessary, and it is therefore possible to fit the assembly to an existing car when this is desirable. For use in cars with rocker shaft F.89716 the existing bolt F.89446 can be used, but for use with rocker shaft F.88341 a new bolt similar to F.89446 but with serrations at one end only, to engage with the serrations in the rocker shaft hole, is required. The extent of the serrations is shown on the drawing. 12 holes 19/64" diameter are used; this is one more than used in the Wraith roller, and of the same size as used there. The corresponding bearing used in the Phantom 111 box with Wraith wheel movements on Phantom 111 has 12 balls 5/16" diameter. In details, such as shims between roller assembly and rocker shaft, and clip to hold the two inner races together, this design follows existing Wraith practice. Da{Bernard Day - Chassis Design}/DB.{Donald Bastow - Suspensions} | ||