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).
Reporting a recurring dynamo charging fault on car 3.B.50 due to a faulty relay switch.
| Identifier | ExFiles\Box 111\3\ scan0135 | |
| Date | 3rd February 1940 | |
| 800b To Rm.{William Robotham - Chief Engineer} c. to Rm{William Robotham - Chief Engineer}/RC.{R. Childs} c. to Rm{William Robotham - Chief Engineer}/FD.{Frank Dodd - Bodies} Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager}1/BA.3.2.40. 3.B.50 Car.Mileage 11,727. The dynamo has again ceased to charge on the above car. What happens apparently is that the relay switch does not make good contact, and is making and breaking the whole time and rattling like a machine gun. This should receive careful attention because it has happened twice before in the history of this car and has been attended to each time by Rm{William Robotham - Chief Engineer}/RC{R. Childs}/Pignatt. Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} | ||