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).
Drop in dynamo output on the Phantom II L.H. chassis after increased mileage.
| Identifier | ExFiles\Box 62\3\ scan0190 | |
| Date | 1st February 1931 | |
| X 6004 COPY. By.{R.W. Bailey - Chief Engineer} from Mx.{John H Maddocks - Chief Proving Officer} Mx{John H Maddocks - Chief Proving Officer}9/TLO. 2.31. X.6004 PHANTOM II L.H. CHASSIS DYNAMO OUTPUT. We are finding that dynamo output after increased mileage on test is falling off. There is a drop of approximately 1 1/2 amps. at maximum output. We have returned a sample machine to Mr.Brock which complied a week ago with the output speed performance curve issued by EFC. We expect that he will pay attention to brushes and get back to the original performance, but it is questionable whether this will be maintained in service. We have noticed suspicious signs of solder melting in the commutator. Are we to expect the drop in performance as the result of use, if so, is there any point in returning these machines to MrBrock for attention to the brushes, if the output is going to fall off with further running. Mx.{John H Maddocks - Chief Proving Officer} | ||