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).
Axle pinion failure on model 30.G.VII and requesting further investigation.
| Identifier | ExFiles\Box 159\5\ scan0190 | |
| Date | 27th April 1941 | |
| EV.{Ivan Evernden - coachwork} from Rm.{William Robotham - Chief Engineer} c. Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} c. Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} Instructions to shop [Handwritten] 1373 [Handwritten] Rm.{William Robotham - Chief Engineer}3/ML.27.4.41. AXLE FAILURE - 30.G.VII. The pinion on 30.G.VII has at last failed. If we could be sure that all Senior Range rationalised axles would stand up to an equivalent amount of punishment we should have little apprehension as to their reliability in the hands of the public. We are making passenger cars and not buses. 30.G.VII has been running as a Bus for nearly 50,000 miles. We should like, however, to establish that the pinion is, as alleged, in SZNCR, and also that the core Brinell is what it should be. We should also like Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} to say whether there exists any gear ratio approximating to the one used, where the pinion strength is greater due to better tooth dimensions. Is it possibly to attribute the axle failure in any way to the various gearbox troubles that have occurred. Rm.{William Robotham - Chief Engineer} | ||