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).
Clarifying the material of a broken valve spring from a 3.B.1v. Bentley test in France.
| Identifier | ExFiles\Box 82\5\ scan0177 | |
| Date | 23th June 1937 | |
| Rm.{William Robotham - Chief Engineer} c. Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} c. Sg.{Arthur F. Sidgreaves - MD} c. Hs.{Lord Ernest Hives - Chair} c. E.{Mr Elliott - Chief Engineer} c. DA.{Bernard Day - Chassis Design} c. RHC.{R. H. Coverley - Production Engineer} c. BY/CS. Files SWDZ 20a BY.4/G.23.6.37. TESTS IN FRANCE - 3.B.1v. BENTLEY. REPORT ON 15,500 MILES RUNNING INCLUDING 1,000 MILES RUNNING BY Rm{William Robotham - Chief Engineer}/Std. ON COOLING TESTS AND BY Sr. IN PARIS. Rm{William Robotham - Chief Engineer}/GWH{George W. Hancock - Head Chateauroux}/IMW{Ivan M. Waller - Head of Chateauroux}/I/JAB.2.6.37. Referring to the question of the broken valve spring EB.3256 on page 3 of the above report, this spring was produced from Swedish carbon steel, coiled and heat treated at our Works to the special damped coil design, that is similar to the Tempered Steel Co's product produced at Derby. The point I wish to make clear is that the broken spring was not the original Bentley design of spring produced in chrome vanadium steel. By BY.{R.W. Bailey - Chief Engineer} | ||