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).
Issues with switchbox charging contacts and the testing of a new quick break switch to prevent burning.
| Identifier | WestWitteringFiles\Q\2-July1927-September1927\ 30 | |
| Date | 20th July 1927 | |
| To R.{Sir Henry Royce} from EFC. c. to BJ. ORIGINAL EFC3/LG20.7.27. SWITCHBOX. X.8730 During my last visit to you the question arose as to whether the charging switch contacts suffered through breaking the field winding without a quick break, and I said I had not heard of any trouble from this source. I have made enquiries however and it appears that there have been one or two isolated cases of a switchbox being returned on this account, probably in cases where the user has been ultra-careful about the charging of the battery. It remains to be seen whether the quick break switch which we have put on a chassis for test ( see other note) will suffer in this respect; this switch, if adopted, would considerably save the switchbox from such burning. EFC. | ||