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).
Design, materials, and manufacturing of rubber connecting links for roll rods and shock absorbers.
| Identifier | ExFiles\Box 151\2\ scan0315 | |
| Date | 30th November 1936 | |
| To EY. Copy to Rm. {William Robotham - Chief Engineer} Ray/Lee. HME Kemp/HFD. 2AS E {Mr Elliott - Chief Engineer} /EV. {Ivan Evernden - coachwork} 2/MN.30.11.36. 12982. Rubber Connecting Links to Roll Rods and Shock Absorbers - All Cars. ------------------------ Although the following remarks apply to all rubber ended connecting links which we have instructed, in particular do they apply to connecting links for the rear roll rod and shock absorber for Phantom III shown on Lec.4955. The Expl. Dept. have made up a set of parts for this scheme and for the Phantom III front roll rod, and point out that some sort of compressing tool is necessary to compress the rubber because if they use the screw thread to do so the end plate turns round before it engages with the slot in the tube. We send herewith N.Sch.4948 showing a suggestion for an elongated tongue for this piece. If this is difficult to make in mild steel machined all over, we suggest it should be made as a dixtampo part machined only where indicated, the tongue being filed as there is no need for an accurate fit. We have been requested to increase the strength of the hexagon and this we have done by reducing the diameter of the bore. The sample tube we have received from the Expl. Dept. appears very heavy and on measuring the thickness we find it is more than that called for on the scheme Lec.4995 in which the inner and outer tubes are asked for .064" thick, 16 S.W.G. A further saving in weight would be effected if the distance piece were not continuous between the two ends, to consist of two separate collars held in by two taper pins each, the scheme for which is shown on Lec.4995. With respect to the large diameter tube, this will be required only if it is found that the small tube is inadequate to do the work imposed upon it by the roll rod. It is a question of loading per square inch on the rubber. We would be glad if the Works would tell us whether it is possible to obtain a tube manipulated as drawn with a butted end for turning the screw. We suggest that it would | ||