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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).
Proceeding with the manufacture of dynamos using a half-charge scheme with a 6' resistance.

Identifier  ExFiles\Box 163\6\  img100
Date  16th December 1930
  
X6016.
Wor{Arthur Wormald - General Works Manager}
c. EFC.
BY5/R/16.12.30.

[STAMP: RECEIVED 16 DEC 1930]

X.6006 Re: Dynamos. X 6016

As we must proceed with the manufacture of dynamos for chassis we are producing, after going care-fully into the position, I am satisfied that the half charge scheme as at present instructed with the exception that we use a 6" resistance instead of .25" resistance is the best we know.

This machine gives us as much current as the special high output machine which was produced for a certain class of customer under the old system, secondly, it gives us a protection for not over charging the battery, thirdly, we can, if we so desire, use the dynamo under the old system, i.e. without resistance at all, but with a 6" resistance I consider we have the best compromise we know of, and that it represents an improvement over the scheme we have just abandoned.

BY.{R.W. Bailey - Chief Engineer} BM
  
  


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