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).
Testing and fitting of R.R. split skirt pistons to the W.III No.4 Unit.
| Identifier | ExFiles\Box 148\1\ scan0126 | |
| Date | 28th April 1939 | |
| To HPS.{Horace Percy Smith - Experimental Factory Mgr} Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation}10/JH.28.4.39. 1256. W.III No.4 Unit. (Piston Tests). We have had a set of R.R. split skirt pistons produced by the Light Production Co. of Slough, who normally supply Aerolite pistons for the production Bentley. Will you therefore please fit - 6 Ew.2121 pistons to the above unit, these are now available, see Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation} Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation} | ||