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).
Urgent instruction to modify a Wraith cylinder head to address valve seat warping.
| Identifier | ExFiles\Box 8\6\ 06-page30 | |
| Date | 27th May 1938 | |
| To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} c. Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} URGENT. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}9/MH.{M. Huckerby}27.5.38. 610 WRAITH CYLINDER HEADS. In conjunction with valve seat warping, will you please carry out the following on the small valve head which is available for the job. The inlet seal throat is at present 1.5 dia. and leaving this at 1.5 machine taper to take std. 1.6" valve, following which standard inlet valves to be fitted EW.1429. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||