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).
Trialling die-cast car pistons made from Halls alloy for 20 HP and 40/50 models.
| Identifier | ExFiles\Box 105\2\ scan0168 | |
| Date | 1st February 1928 | |
| To BY.{R.W. Bailey - Chief Engineer} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. to RHC.{R. H. Coverley - Production Engineer} Handwritten annotation: [strikethrough]X5040[/strikethrough] X5040 Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}3/LG1. 2. 28. With reference to the car pistons to be made in Halls alloy. We would like to try a set [strikethrough]of[/strikethrough] both the 20 HP. and 40/50 pistons die-cast in this material. At the moment we have more facilities for testing 20 HP. pistons, we shall therefore be able to get some results on these first. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||