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).
Extract discussing production delays and material specifications for the Goshawk electrical equipment's commutator.
| Identifier | ExFiles\Box 35\4\ scan 068 | |
| Date | 9th November 1921 | |
| X.4384 Extract from R14/G9.11.21. RE GOSHAWK ELECTRICAL EQUIPMENT. X.4383. X.4384. X.3348. X.3945. I have been surprised at the slowness of the production of the starter motor and dynamo but understand it is moving fairly well now. Mr. Hives informs me that some delay has been caused in the production of the bakelite commutator. You will realise that this method of making up the commutator was suggested because of it being a quick, inexpensive and sound method. The model that we examined had bakelite micarta between the plates, but I think to begin with the safer policy would be to fit the plates with mica separators which need only be dressed off on the outsides and ends, so as to permit of forcing the erection rings over the commutator plates. Mr. Hives informs me that there has been an attempt to force the bakelite between the plates, but surely this must be a misunderstanding, because so far as I can understand it is impossible to build a commutator up without separating the plates by sheet insulation of uniform and exact thickness. R | ||