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).
Confirming a request to test a Ph.III rockershaft under static load.
| Identifier | ExFiles\Box 95\1\ scan0461 | |
| Date | 2nd December 1937 | |
| To HPS{Horace Percy Smith - Experimental Factory Mgr}/W.Bell. from Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} c. HPS.{Horace Percy Smith - Experimental Factory Mgr} Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer}5/MH.{M. Huckerby}2.12.37. PH. III STEERING. This is to confirm that we have asked you to twist a Ph.III rockershaft under static load. We would like to know the loads required to produce a measurable permanent set and 10° of twist. Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} | ||