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).
Investigation into a broken lower triangle lever and subsequent crack testing of similar levers.
| Identifier | ExFiles\Box 154a\4\ scan0156 | |
| Date | 8th April 1942 | |
| To Rm. {William Robotham - Chief Engineer} from Rm {William Robotham - Chief Engineer} /Wym. {G. Harold Whyman - Experimental Manager} c. Ev. {Ivan Evernden - coachwork} c. Rm {William Robotham - Chief Engineer} /WJH. 1306 Rm {William Robotham - Chief Engineer} /Wym. {G. Harold Whyman - Experimental Manager} 11/OH.8.4.42. We herewith attach photographs of the broken lower triangle lever removed from 9.B.V. car after having run 45462 miles. There does not appear to be any evidence of either fatigue or cracks and we suggest the breakage was due entirely to the accident, We have dismantled and magnetically crack tested all the lower triangle levers on our cars at Clan Foundry and only found two faulty ones. The near side lower triangle lever on 30.G.VII was found to have a deep blow hole in the neck of the jaw at the pivot end, and the off side front lower triangle lever on 2.B.50 was found to be badly cracked in exactly the same spot as 9.B.V has broken. These two levers have been removed from the cars and replaced by new ones, the mileage of the lever on 30.G.VII being 94495 and on 2.B.50. 34501. Rm {William Robotham - Chief Engineer} /Wym {G. Harold Whyman - Experimental Manager} | ||