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 failure of a Goshawk dynamo commutator and plans for testing a new design.
| Identifier | ExFiles\Box 50\5\ Scan052 | |
| Date | 17th May 1922 | |
| W. for R from Hs.{Lord Ernest Hives - Chair} c. to CJ & EJ. c. to E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to Ey. X 4333 Hs{Lord Ernest Hives - Chair}2/LG17.5.22. X.4383 GOSHAWK DYNAMO X.4333. We are sending to you today a broken commutator off 7-Goshawk II car. Ey. 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 EFC. 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} | ||