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 Bentley cross and side steering tube ball joints.
| Identifier | ExFiles\Box 87\5\ scan0199 | |
| Date | 5th May 1936 | |
| To BY.{R.W. Bailey - Chief Engineer} Copy to Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Dr. Hs{Lord Ernest Hives - Chair}/HDY{William Hardy} RHC{R. H. Coverley - Production Engineer} X35D F.J.H. Bentley - Modified Cross and Side Steering Tube (Front End) Ball Joints. As a result of criticisms received from RHC{R. H. Coverley - Production Engineer}/Hollingsworth concerning the erecting difficulties of the cross steering tube joint and the joint in the front end of the side steering tube, we have investigated the troubles described. Apparently it is possible for the ball pads to be inserted 180° out of phase. Another trouble is the small amount of engagement of the positioning washer to the ball end and the use of a thin nut and a tab washer for locking the same. On N.Sch.4797 herewith we show the modifications necessary to overcome all of these troubles, both for a joint having a leather stocking, and for a joint having a metal water-excluder. Joint with Leather Stocking. The modifications consist of a spring loaded ball pad with a beard, and a fixed ball pad having an eccentric spigot into the forging forming the outer casing. The taper and screw thread end of the ball pin have been modified. The addition of a radius in the corners of the undercut forming the oilway on the taper diameter has been made. To ensure a greater engagement between the ball pin flats and the positioning washer, the amount of engagement has been increased by the thickness of the locking washer which has been deleted as a result of the use of a castle nut. In order to provide clearance between the castle nut and the axle, the side steering lever has to have a set of .275". Contd: | ||