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).
Performance of production Goshawk dynamos, comparing them to U.S.A. Bosch machines.
| Identifier | WestWitteringFiles\J\November1922\ Scan117 | |
| Date | 20th November 1922 | |
| Contd. -3- EFC4/T20.11.22. moment some of the production Goshawk dynamos do not seem to be coming out quite as well. Both these other machines are of course single field winding third brush controlled, we feel that the U.S.A. Bosch, although not well made to external appearances, is nevertheless good electromagnetically. It will be noted that in each case, the carcase thickness is a good deal greater than we have on the Goshawk. EFC. Output performances of one of the latest production Goshawk dynamos are today being taken and so far the results appear to be an improvement. | ||