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).
Instructions for modifying the water pump on the Wraith No.4 Unit for an endurance run.
| Identifier | ExFiles\Box 149a\1\ scan0222 | |
| Date | 5th May 1938 | |
| 1269. HPS.{Horace Percy Smith - Experimental Factory Mgr} HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Std. c. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} Rm{William Robotham - Chief Engineer}/Std4/R.5.5.38. Wraith No.4 Unit - Endurance. Will you please fit water pumps scheme SCD. 494 to this engine for its forthcoming endurance run, but fit a standard W/M rear bearing and standard pump cover with S/S thrust plug to EXS.510. Will you also put water grooves, etc. in bush EXS.552 and pump casing to EXS.551 to Rm{William Robotham - Chief Engineer}/Std's verbal instructions, as has been done on 28.G.VI car water pump. Rm{William Robotham - Chief Engineer}/Std. | ||