Requesting the construction of a Phantom III propeller shaft to investigate inconsistent balance issues after fitting transmission dampers.
| Identifier | ExFiles\Box 94\4\ scan0148 | |
| Date | 7th April 1937 | |
| 337. HPS. {Horace Percy Smith - Experimental Factory Mgr} from Rm {William Robotham - Chief Engineer} /Smth. Rm {William Robotham - Chief Engineer} /Smth3/R.7.4.37. P.III PROPELLER SHAFT. We have recently fitted transmission dampers to one or two P.III's, and have been troubled by the propeller shaft balance being inconsistent. As we have issued a Depot Sheet for fitting the damper in the case of drive groan complaints, we want to investigate the out-of-balance quickly. Will you please have built up a P.III propeller shaft, complete with a 25/30 damper, in which each of the following items are in independent balance:- (1) Shaft. (2) Damper hub. (3) Inertia rings. We shall then see if the balance can be upset by turning the rings into different positions. Rm {William Robotham - Chief Engineer} /Smth. | ||
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).