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).
Tests with reversed polarity on a Goshawk dynamo D.
| Identifier | ExFiles\Box 50\5\ Scan342 | |
| Date | 25th August 1924 | |
| ROLLS-ROYCE LTD. INSTRUCTIONS. To E.Y.b. Order No. W.A. 75 Customer's No. X4333 Tests with reversed polarity on Goshawk dynamo D This test was for the purpose of observing whether running the above dynamo with reversed polarity improved the commutation or not. The dynamo was first run a considerable time on our direct-coupled rig both intermittently and continuously with connections reversed. During this test the dynamo functioned satisfactory and the condition of the commutator and brushes was as follows:- Signed contd This Sheet must be filed on completion of the work. | ||