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).
Continuation page discussing experiments with softer brushes and modifications to a commutator.
| Identifier | ExFiles\Box 51\1\ Scan142 | |
| Date | 7th March 1923 guessed | |
| -3- Contd. We began experimenting with softer brushes, but discontinued these experiments in view of your preference for the Z Le Carbone. We do not think more angular embrace is necessary. We have ascertained that it would be easily possible to have 100% more sections in the commutator and would only add slightly to the cost of production of this item. EFC. {E. Fowler Clarke - Electrical Engineer} | ||