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).
The production of redesigned Wraith timing gear samples.
| Identifier | ExFiles\Box 136\1\ scan0291 | |
| Date | 25th March 1938 | |
| To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} c Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} 8 1155 (Handwritten) Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer}13/MH.{M. Huckerby}25.3.38. WRAITH TIMING GEAR. In connection with the redesigned Wraith camshaft gear to EW.1729/30 we have ascertained that Messrs. Attwaters, who will mould this gear, have no criticism of the design and they have made a single impression mould for making sample blanks. Will you please make six centres to EW.1730T to send to Attwaters. It is necessary to leave some machining allowance on the steel centre and this is allowed for on the T drawing. When the gear blank is returned to us it should be finished to EW.1730. Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} | ||