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).
Twisted rocker shafts in the Phantom III steering gear, proposing a stronger design for the 8-cylinder Silver Wraith.
| Identifier | ExFiles\Box 153\1\ scan0271 | |
| Date | 19th April 1939 | |
| De [crossed out] Rm.{William Robotham - Chief Engineer} [crossed out] 1300, BY.8/G.19.4.39. PHANTOM III and SILVER WRAITH. RE: STEERING GEAR. Having had a number of Phantom III rocker shafts twisted as much as 10º by apparently small impacts, it is necessary that we get out a design for the 8 cylinder "Silver Wraith" which will include a stronger rocker shaft and heavier follower roller design. Whilst I consider the present rocker shaft and follower rollers are satisfactory for our present production of Wraith and Bentley, I am sure that the increased weight on front of 8 cylinder Wraith demands a thorough investigation of the steering to ensure complete safety. I would also suggest we consider the strength of the Phantom III roller with the strengthened rocker shaft, which will transmit heavier shocks. [Handwritten note:] F.J.H. Please remove Buick steering + get full particulars. BY.{R.W. Bailey - Chief Engineer} Rm{William Robotham - Chief Engineer} Was it a bent SS{S. Smith} tube | ||