Rolls-Royce Archives
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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 performance and wear of 'AG.2 Morganite Brushes'.

Identifier  ExFiles\Box 172\2\  img021
Date  22th October 1923
  
Extract from EFC6/T22.10.23.

AG.2 MORGANITE BRUSHES.

This set ran more smoothly and the positive brush is polished over the leading three-quarters of its surface. The control brush, which sparked more than is usual, is duller. The commutator was left brown with slight irregularities. The wear is :-
Positive .014" - Negative .017" - Control .042".
  
  


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