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).
Photographs of failed parts from six different B.V. gearboxes.
| Identifier | ExFiles\Box 99\4\ scan0262 | |
| Date | 10th April 1941 | |
| EV{Ivan Evernden - coachwork}, EU/Ten, RFJH. To Rm.{William Robotham - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager}7/SW.10.4.41. B.V. Gearboxes. Herewith photographs of the parts that have failed on six different B.V. gearboxes. The photographs and headings are self-explanatory. Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} [Signature] | ||