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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).
Confirming alterations to the third EAC starter motor, including pole core size and winding disposition.

Identifier  ExFiles\Box 64\1\  scan0202
Date  28th April 1925
  
To RHC.{R. H. Coverley - Production Engineer} from EFC.
c. BY/RD.

X4/20

EFC5/T28.4.25.

X.8620. EAC. STARTER MOTOR.

This will confirm our conversation of yesterday that the third EAC. motor which you are making up, which presumably we shall call C, will have the reduced size of pole core in accordance with an alteration issued by BY/RD. as a result of our EFC1/T14.1.25.
At the same time it will have 17 SWG teazer winding, and if convenient in other respects, what we consider electrically the best disposition of the main and teazer windings, in which the teazer winding is near to the pole tips and the main winding near to the carcase, i.e. not side by side as in the originally proposed standard to D.70608.
We want to get in this motor the complete arrangement we are finally proposing for standard.

MADE AT CROXLEY

EFC.
  
  


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