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).
Modifications to the Phantom III cross steering tube joints, including finishing methods for pads and using a stronger spring.
| Identifier | ExFiles\Box 95\1\ scan0411 | |
| Date | 24th May 1937 | |
| F.J.H. Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} E.10/HP.24.5.37. c. Hs.{Lord Ernest Hives - Chair} By.{R.W. Bailey - Chief Engineer} RHC.{R. H. Coverley - Production Engineer} Rm.{William Robotham - Chief Engineer} Da.{Bernard Day - Chassis Design} EV.{Ivan Evernden - coachwork} Mx.{John H Maddocks - Chief Proving Officer} Hd.{Mr Hayward/Mr Huddy} Pan/GWH.{George W. Hancock - Head Chateauroux} 350 Phantom III Cross Steering Tube Joints. Referring to Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer}1/AP.19.5.37 there is no doubt as pointed out that we must take measures to turn out these steering joints so that they maintain their friction. To this end we are in agreement with the proposal to adopt methods of finishing the pads which approximate to the final bedded condition and also to using a stronger spring. The proposed spring Rm.{William Robotham - Chief Engineer}254 has a very high theoretical stress, namely 145,000 lbs/sq.in. As however we cannot be sure that this is the actual stress, and also these springs have stood up for 20,000 miles and furthermore there is no stress range in operation it is highly probable the spring will be quite satisfactory on production and we are in agreement with using it. E.{Mr Elliott - Chief Engineer} [Signature] | ||