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).
Use of nickel steel for a body subframe and the production of dies for chassis frames.
| Identifier | ExFiles\Box 104\3\ scan0053 | |
| Date | 31th May 1928 | |
| DA{Bernard Day - Chassis Design}/EV{Ivan Evernden - coachwork} c. Hs.{Lord Ernest Hives - Chair} X5380 BY10/G.31.5.28. [STAMP: 1 JUN 1928 RECEIVED] INDIA 3. BODY SUBFRAME. --------------------- Your memo EV{Ivan Evernden - coachwork}1/30.5.23. As the requirement in the subframe is rigidity and not merely one of strength the use of nickel steel will not help you to this end. In other words the mild steel frame will be as rigid as the nickel steel, and since rigidity should be aimed at strength is obviously well on the safe side if rigidity is obtained. The subframes have always been made up by welding, but we are not adepts at welding nickel steel. Nickel steel is somewhat tricky unless the welder is used to it, but as pointed out above nickel should not be necessary. If, however, it is required we can obtain nickel steel sheet .104" thick. CHASSIS FRAMES. --------------- In regard to the 20 HP. frames for India 3, these have been made to F.55189, a drawing which did not include the modification on the joggle referred to in your letter. We did not produce dies as since you yourself point out it was agreed dies were not necessary at that particular juncture, and since we have been working on the matter all along in a desultory kind of fashion, we did not feel that the time had arrived for expending money on new dies, which would be distinctly costly. We have had dies for frames scrapped on one or two occasions without use, and therefore we have not, as you presume, made any move to put the correct dies in hand. We wish to make sure of the position experimentally before going to the cost of dies. BY.{R.W. Bailey - Chief Engineer} By | ||