Instruction regarding fan blade material and grease for Wraith and B.V. models.
| Identifier | ExFiles\Box 99\3\ scan0018 | |
| Date | 25th November 1938 | |
| To By. {R.W. Bailey - Chief Engineer} from Rm {William Robotham - Chief Engineer} /Std. c. By {R.W. Bailey - Chief Engineer} /CS. 4246 y 624. Rm {William Robotham - Chief Engineer} /Std.C/MH. {M. Huckerby} 25.11.38. FANS - WRAITH AND B.V. Further to our conversation re cracks in fan blades on 8.B.V. fan, will you please instruct that all future Wraith fans are fitted with "Duralumin" blades and this should also apply to B.V. from the start. Will you also please instruct that all fans Bentley, Wraith and B.V. are packed with Mobilgrease No.6 water pump grease in future - we have run this grease in 8.B.V. fan for the last 15,000 miles test and it is entirely satisfactory and shows no signs of leaking from the hub. Rm {William Robotham - Chief Engineer} /Std. | ||
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).