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).
Request for a factory cost comparison for push rods for Wraith III and Bentley III engine units.
| Identifier | ExFiles\Box 148\5\ scan0334 | |
| Date | 16th May 1938 | |
| 1260 To G/Rb.{R. Bowen} Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}19/JH.16.5.38. PUSH RODS.FOR WRAITH III AND BENTLEY III ENGINE UNITS. Will you please give us an estimate of the factory cost comparison between the following push rods. (1) EW.1690 bought in as forgings from Butler and Spraggs at 10 1/2d. each in S/ZN and finished off by us in the standard manner. (2) EW.1690 bought in as forgings from Belgrave Eng. Co. at 5d. each in .4 carbon steel. Spherical internal at top machined and spherical external at the base machined remainder of the stem etc. having been sand blasted. The two ends are of course hardened. Sample finished in this manner can be supplied by Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} if necessary. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||