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).
Reduction of noise in the first speed gear for the Myth model by adding an adjustable support.
| Identifier | ExFiles\Box 110\2\ scan0081 | |
| Date | 8th July 1941 | |
| To Ev{Ivan Evernden - coachwork}/Tln. from Rm.{William Robotham - Chief Engineer} Copy to Ev.{Ivan Evernden - coachwork} Rm{William Robotham - Chief Engineer}/RJX. Rm{William Robotham - Chief Engineer}/GB. Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} Rm{William Robotham - Chief Engineer}/HH. 728 Rm.{William Robotham - Chief Engineer}4/ar.8.7.41. QUIET GEARS FOR MYTH FIRST SPEED. The question of a support in the immediate vicinity of the first speed gear, in order to produce silence, appears to me to be important. If it is a controlling factor, it rules out the design of box which we have prepared for the Myth, unless we use plain side shaft bearings which, from the examination of other boxes, do not seem very promising. We have, however, a number of Bentley V boxes with noisy first speeds and we suggest that, if we select the quietest of these and arrange a support from the case close to the first speed wheel on the cluster gear shaft, we might get the required information. Will Ev{Ivan Evernden - coachwork}/Tln. please look into this and see what sort of experiment he can suggest. The nicest arrangement would be to have a support which would be easily adjustable from the outside of the box, so that it could be applied or removed while the car was on the road. Rm.{William Robotham - Chief Engineer} | ||