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).
Replacement of a dynamo commutator for car 3.B.50 with one built from pure mica.
| Identifier | ExFiles\Box 168a\3\ img060 | |
| Date | 1st August 1939 | |
| 6142 To HPS{Horace Percy Smith - Experimental Factory Mgr}/W.C. c. to By/RD. c. to RM{William Robotham - Chief Engineer}/RC{R. Childs}/CAP. Rm{William Robotham - Chief Engineer}/RC.{R. Childs}7/JH.c1.8.39. Dynamo for car 3.B.50. Owing to the reported failure of the dynamo on 30.G.VII in France, due to the brushes becoming sticky, we think it most important that the next car going to France should have the dynamo commutator built with pure mica and not micanite. Will you therefore, please arrange for the dynamo belonging to 3.B.50. to have the commutator removed and a new one built with mica fitted. RM{William Robotham - Chief Engineer}/EC. | ||