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).
The Phantom III Gearbox selector rod plunger housing, its material, and manufacturing process.
| Identifier | ExFiles\Box 94\2\ scan0139 | |
| Date | 31th December 1936 | |
| 328 DY.{F R Danby} c. E.De.RHC.{R. H. Coverley - Production Engineer} Rm.{William Robotham - Chief Engineer} HPS.{Horace Percy Smith - Experimental Factory Mgr} E/HDY.{William Hardy}1/HP.31.12.36. Phantom III Gearbox. We send herewith N.Sch.4981 showing the selector rod plunger housing suitable for die casting. The material suggested is RR.50. We have previously suggested the use of an aluminium alloy to save weight but the difficulty was in closing the bores. However, it is now thought that it will be possible to swage in discs successfully as shown on our drawing. N.Sch.4981 herewith. E/HDY.{William Hardy} | ||