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).
Requesting an endurance test on a Phantom III clutch plate to assess specific failure points.
| Identifier | ExFiles\Box 93\3\ scan0303 | |
| Date | 22th April 1937 | |
| 312, HPS{Horace Percy Smith - Experimental Factory Mgr}/W. Bell. c. HPS.{Horace Percy Smith - Experimental Factory Mgr} ↓ Rm{William Robotham - Chief Engineer}/Smth13/R.22.4.37. P.III CLUTCH PLATE EX.27309. We want to run an endurance test on one of these, consisting of, say, 500,000 compressions to test the following points:- (1) Will the cushion springs fracture or lose their set ? (2) Will the facings fracture in the neighbourhood of the rivets ? (3) Will the sliding edge of the cushion springs wear the centre plate ? Will you please arrange accordingly. The rig can easily be made of a complete clutch and flywheel, in which the release trunnion is operated by a motor and crank mechanism. We hope to have a plate ready for test in about two weeks' time. Rm{William Robotham - Chief Engineer}/Smth. | ||