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 testing of Fabroil gears and the potential use of unhardened steel gears on the Phantom III and Wraith models.
| Identifier | ExFiles\Box 136\1\ scan0209 | |
| Date | 31th May 1937 | |
| Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} from Rm.{William Robotham - Chief Engineer} 1153 Rm{William Robotham - Chief Engineer}8/R.31.5.37. FABROIL GEARS. What is the present position with regard to fabroil timing gear wear on the P.III ? Have we got enough types of gear on test? Ought we not to get the 'Celoron' people to make this type of gear for us ? Have we tried running non-hardened gears on the P.III against fabroil cam wheel ? If it would save money to run unhardened steel gears against the fabric gear, we ought to try it. If it is successful on the P.III, we could then use it on the Wraith. Rm.{William Robotham - Chief Engineer} | ||