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 magnesium for casting various car parts, including induction pipes, rocker covers, and axle centre casings.
| Identifier | ExFiles\Box 142\4\ scan0121 | |
| Date | 6th February 1940 | |
| 1202 To Ev.{Ivan Evernden - coachwork} from Rn.{Mr Robinson} c. Ev{Ivan Evernden - coachwork}/HH. c. Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation} c. HPS{Horace Percy Smith - Experimental Factory Mgr}/RH.{R. Hollingworth} Re.S/MH.{M. Huckerby}6.2.40. MAGNESIUM CASTINGS. We wish any further castings for induction pipes, rocker covers, bottom halves and gear boxes to be ordered in magnesium. The idea behind this is that if a piece has been tested in magnesium and has come out successfully, it will certainly stand up in aluminium. Also, it seems probable that magnesium will be as cheap as aluminium after the War. With regard to our axle centre casings, we want 2 of the 3 which are about to be instructed, to be in magnesium. A third to be in aluminium in case we experience any trouble on the larger cars. Rm.{William Robotham - Chief Engineer} | ||