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).
Examination of a faulty dynamo from chassis 2LC, where melted solder was caused by an incorrect control brush setting.
| Identifier | ExFiles\Box 70\3\ scan0293 | |
| Date | 26th May 1927 | |
| To BY.{R.W. Bailey - Chief Engineer} from EFC. c. Mr. Brock. X8783do EFC2/T26.5.27. 40/50 DYNAMO UR.65 EX CHASSIS 2LC. We have duly examined the above machine of which the complaint was that the solder had melted at the commutator connections. The fact that the control brush has the early setting of 120º for the larger output as compared with 122º, appears to have been sufficient cause for the machine just reaching this condition. The armature itself, apart from the connections to the commutator, does not appear to be damaged, though the field coils have been rather over-baked by the heating, and probably should be replaced. The machine is herewith returned to BY.{R.W. Bailey - Chief Engineer} EFC. | ||