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).
Recurring dynamo commutator failures on a Goshawk-11 car and the proposed solution.
| Identifier | ExFiles\Box 180\M1\2\ img018 | |
| Date | 17th May 1922 | |
| CJ. for R.{Sir Henry Royce} from Ha. c. to CJ. and RJ. c. to H.{Arthur M. Hanbury - Head Complaints} c. to De. c. to HY.{Tom Haldenby - Plant Engineer} ORIGINAL Hs{Lord Ernest Hives - Chair}2/LG17.5.22. X. 4383 GOSHAWK (X 4333) - crossed out DYNAMO X. We are sending to you today a broken Commutator off 7-Goshawk-11 car. Mr. Hy.{Tom Haldenby - Plant Engineer} took this car to France last week. The Commutator burst on the way to Dover. This makes, in all, three Commutators which have failed. This last commutator is one made to the original design and has considerably more bakelite round it. It will be seen, however, by the appearance of the commutator that the segments have been loose for some time. This actual generator which has recently failed, was run for a considerable time by BPC. on the bench, and gave no trouble. We are also sending you a section of the latest commutator which has been made with another type of moulding material. As soon as the Works start, some of these commutators will be tested on generators. In order to keep the car running in France, we have had to send a C.A.V. Generator. Hs.{Lord Ernest Hives - Chair} | ||