Thick black gummy deposit on the dynamo commutator and badly worn brushes.
| Identifier | ExFiles\Box 83\1\ scan0442 | |
| Date | 11th April 1937 | |
| 200a HOTEL DE FRANCE. CHATEAUROUX(French test region). Indre. FRANCE. Rm {William Robotham - Chief Engineer} /GWH {George W. Hancock - Head Chateauroux} /IMW {Ivan M. Waller - Head of Chateauroux} /6/JAB. 11th April 1937. To. Rm. {William Robotham - Chief Engineer} c. Rm {William Robotham - Chief Engineer} /Wst. c. Rm {William Robotham - Chief Engineer} /GWH. {George W. Hancock - Head Chateauroux} 6. B. IV. DYNAMO BRUSHES. Replying to your memo Rm {William Robotham - Chief Engineer} /Wst.3/AP.9.4.37, the dynamo commutator is not oily, but becomes coated with a thick black gummy deposit off the brushes. This also gets on the sides of the brushes and makes them sticky. They have worn down badly. -------- Rm {William Robotham - Chief Engineer} /GWH {George W. Hancock - Head Chateauroux} /IMW. {Ivan M. Waller - Head of Chateauroux} Ivan. Waller. | ||
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).