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).
Modifications to the Goshawk II dynamo brushes and field connections.
| Identifier | WestWitteringFiles\I\May1922\ Scan35 | |
| Date | 11th May 1922 | |
| Hs{Lord Ernest Hives - Chair} To D.A. from E.{Mr Elliott - Chief Engineer} RECD MAY 12 1922 X4333 C. to Cdr.{W. J. Chandler - Chief Clerk} C. to War C. to [struck through: EH] C. to H.G. C. to E.W.C. ✓ C. to [struck through: EDC] [struck through: X 4383] GOSHAWK II. DYNAMO. [struck through: X 4333] We send herewith drawing No. Lec 1572 showing slight modifications for the purpose of providing a means of securing the field connections and preventing them interfering with the withdrawal of the brushes. The necessary modifications also for a narrower control brush have been shewn. This brush has been made more than half the thickness of the main brushes so as to have sufficient substance for making a good pigtail connection. We think this does not matter as the brush is still narrower than the width of the commutator bar even when the latter has been reduced due to wear and returning of the commutator. We agree that it may interfere with the [struck through: exact] [handwritten: act] point of commutation but we should be glad if Mr. Clarke would confirm that the dimension of the control brush as shewn on Lec 1572, is suitable. E.{Mr Elliott - Chief Engineer} | ||