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).
Request for the examination of two failed valve springs, one from a Bentley and one from a Phantom III.
| Identifier | ExFiles\Box 158\4\ scan0137 | |
| Date | 25th March 1937 | |
| To H1/Mr.Whitehead. 1360. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}7/AP.25.3.37. VALVE SPRINGS. Will you please examine and give the results of your observation on the failure of the two springs which we send herewith. The records of them are as follows - Bentley Spring. EB.3256X. is a closely coiled spring made in "Swedish Wire" bought from The Tempered Spring Co. and coiled by R.R. This ran 1 hour endurance at 4000 R.P.M. Phantom III. spring. Standard S/CV. outer spring failed after 100 miles on the road in 33-EX. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||