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).
The charging rate of a Lucas dynamo and a comparison between battery ignition and magneto performance at slow speeds.
| Identifier | WestWitteringFiles\H\November1921\ Scan36 | |
| Date | 25th November 1921 | |
| Contd. (3) EFC4/T25.11.21. whole time as a matter of experiment. He considers the charging rate too high on the standard Lucas dynamo at the high speeds, and that a drooping curve would be better if not carried to extremes. He praised the battery ignition very highly and demonstrated the phenomenal slow running which he can obtain thereon, though he said the magneto was decidedly poor (K.6 Watford) at slow speeds. with the dynamo he had never had the slightest trouble. EFC. | ||