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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).
Graph of output-speed curves for a Lucas E.575 Dynamo with 4, 5, 6, and 7 cells.

Identifier  WestWitteringFiles\C\May1919\  Scan54
Date  5th May 1919
  
LUCAS E.575 DYNAMO
As plain shunt wound machine.
Output-speed Curves to 4, 5, 6 and 7
fully charged large capacity
cells in series.
OUTPUT
AMPERES
DYNAMO SPEED (R.P.M)
4 cells
5 cells
6 cells
7 cells
Data points on curves:
4 cells: 8.8, 9.0, 9.2, 9.4
5 cells: 11.0, 11.25, 11.50, 12.0
6 cells: 15.0, 15.5, 16.0, 16.4
7 cells: 17.0, 17.5, 18.0, 18.5
Small figures are operating voltages
8.55 10.75 13.6 15.9 VOLTS.
555 635 750 840 R.P.M
C.
E.7C 5/5/19
  
  


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