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).
Material change for front suspension coil springs to achieve a cost saving.
| Identifier | ExFiles\Box 110\3\ scan0033 | |
| Date | 10th January 1941 | |
| Handwritten: Ev{Ivan Evernden - coachwork}/DB.{Donald Bastow - Suspensions} Believe shot blasted black drawn would give best results. Tempered Spring Co should be consulted. Rm{William Robotham - Chief Engineer} To [Strikethrough]Rm.{William Robotham - Chief Engineer}[/Strikethrough] from Rm{William Robotham - Chief Engineer}/HH. c. to [Strikethrough]Ev.{Ivan Evernden - coachwork}[/Strikethrough] c. to Ev{Ivan Evernden - coachwork}/JD.{J. Draper - Frames} M.40 Chassis. Front Suspension Mechanism Sec.7042. Coil Spring in accordance with PL.428. Handwritten signature: [illegible] Handwritten numbers: 1030 746 To suit the above scheme, the following detail has been prepared :- RG.{Mr Rowledge}2052 Spring - Front Wheels (600 lbs) 2 Off. With reference to Ev{Ivan Evernden - coachwork}/DB{Donald Bastow - Suspensions}'s remarks on the issue memo, which propose a cheaper material than that previously used, viz:- Silico Manganese, we have been in touch with the English Steel Corporation, Ltd. These people point out that Silico Manganese is one of the cheapest spring materials, but suggest that if the note "to be produced from spring steel wire which has been ground and polished" which is called for on our past springs is substituted by "to be produced from bright drawn spring steel wire", a saving in cost will occur. This has been mentioned to Ev{Ivan Evernden - coachwork}/DB{Donald Bastow - Suspensions}, who is agreeable to this substitution, and we have therefore made the drawing to suit. This completes the above scheme. Rm{William Robotham - Chief Engineer}/HH. Handwritten signature: [illegible] | ||