Design modification for the Wraith II front pivot due to an eccentric bore in the forging.
| Identifier | ExFiles\Box 7\2\ Axle Front-page1 | |
| Date | 6th January 1937 | |
| SECRET To: Mr. Copy to Mr. Rm. {William Robotham - Chief Engineer} SMC. H-S. Haynes. E {Mr Elliott - Chief Engineer} /EV. {Ivan Evernden - coachwork} YN/N.6.1.37. 60D [Handwritten] Les. {Ivan A. Leslie} Get Correct Units on Bump Chassis. Rmy Wraith II Front Pivot. On the first Wraith II front pivots the bore for the pivot bearing has come out slightly eccentric with the forging, with the nett result that the housing for the pivot top bearing is thin. As on the original design W.Sch.4813 the thickness of this metal is shown rather thin (.150”)/we agree to the suggestion of HPS {Horace Percy Smith - Experimental Factory Mgr} that the section be increased, and we send herewith W.Sch.4992 showing our proposal. A rib is provided at the top and bottom of the boss for the top bearing housing and this could be achieved by altering the existing dies. Whilst the present forgings can be used for the first cars, it is desired to have the new piece for the 10,000 miles car. Att:N.Sch.4992. EV. {Ivan Evernden - coachwork} | ||
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).