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 cracks found on a Wraith yoke from chassis 26.G.VI.
| Identifier | ExFiles\Box 108\3\ scan0222 | |
| Date | 12th May 1938 | |
| To By.{R.W. Bailey - Chief Engineer} c. to Hs.{Lord Ernest Hives - Chair} c. to HPS.{Horace Percy Smith - Experimental Factory Mgr} 600a. Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale}16/JH.12.5.38. CRACKS IN WRAITH YOKE.26.G.VI. With reference to the report on the chassis 26.G.VI. which ran a 21,000 miles road test, it is stated that there were cracks in the offside yoke piece and that these were being investigated by the laboratory. It has been found that the cracks were forging cracks and not caused by running. They were not in the main body of the yoke but in a small boss. We have also found some small cracks in the upper lever of a Wraith suspension, these also were forging cracks. There is therefore no need for the Engineering Dept. to take any action. Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} | ||