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).
Investigation results for different armatures and a note on upcoming tests for series winding.
| Identifier | ExFiles\Box 61b\1\ scan0233 | |
| Date | 28th August 1931 | |
| Hs{Lord Ernest Hives - Chair}/Pgtl/AD28.8.31 contd. -2- Having investigated these armatures, we feel that our present armature, which gives a curve similar to 2. is about the best we can get. This is more so in view of the fact that armature 3. is as far as we can go in this direction, and can hardly be considered a production job. Referring to R2/M4.8.31, we hope shortly to be sending you our first results in connection with using the series winding excited by the head lamp current. Hs{Lord Ernest Hives - Chair}/Pgt. | ||