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).
Performance and proposed testing of rubber-ended connecting links for roll rods and shock absorbers on Phantom III and Wraith chassis.
| Identifier | ExFiles\Box 151\2\ scan0332 | |
| Date | 24th April 1937 | |
| To Rm. {William Robotham - Chief Engineer} Copy to Hs. {Lord Ernest Hives - Chair} E. {Mr Elliott - Chief Engineer} Da. {Bernard Day - Chassis Design} By. {R.W. Bailey - Chief Engineer} HPS. {Horace Percy Smith - Experimental Factory Mgr} Rm {William Robotham - Chief Engineer} /Les. Re: Rubber Ended Connecting Links for Roll Rods and Shock absorbers. The Munro type of rubber ended connecting link which we have tested on the rear roll rod and shock absorber of P.III. and Wraith III. has been far from satisfactory. In view of the fact that a completely American example brought over by E {Mr Elliott - Chief Engineer} /PSN. did very well on a bumper test on P.III. we feel that we should pursue our investigation a little further before we drop this scheme entirely. Judging from the report of Rm {William Robotham - Chief Engineer} /GWH. {George W. Hancock - Head Chateauroux} re 35-EX. of February 23rd, 1937, and from the Wraith - bumper chassis report Rm {William Robotham - Chief Engineer} /Les.1/AP.3.4.37. it would appear that the diameter of the pallet is too small, allowing the rubber to force it out of the slot in the tube. The dimensions for 1" internal diameter tube used on P.III. were taken from the American details. We suggest that we should try on the rear of the next Wraith bumper chassis the rubber ended links having a larger pallet, and we send herewith N.Sch.5130 showing our proposals for both the 1" and 1 1/8" bore tubes. We have shown no ends to the pallet for attachment to the levers as this we suggest you make to suit the job. We believe you are converting the bumper chassis to accommodate better links. If it is desired to test the lubricating connecting link as well, we suggest that one rubber link and one lubricating link be tried - one of each set. We are very anxious to avoid the use of a lubricating link at the rear of Wraith III. on the grounds of its expense, whilst if a front roll rod is found necessary some cheap form of rubber ended connecting link is essential if costs and complications are to be avoided. We are investigating the possibility of using a Delco type joint in this position as an alternative. E {Mr Elliott - Chief Engineer} /Ev. {Ivan Evernden - coachwork} Att:N.Sch.5130. | ||