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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).
Instructing the Drawing Office to change the material for servo disc facings from Ferodo to Halo.

Identifier  ExFiles\Box 26\4\  Scan260
Date  5th June 1924
  
+4388
Mr. D'Aeth.
c. Hs.{Lord Ernest Hives - Chair}
c. D.O.
c. Eft.
BY18/H.{Arthur M. Hanbury - Head Complaints} 5. 6. 24.

MATERIAL FOR FACING SERVO DISCS.
--------------------------------

Hs.{Lord Ernest Hives - Chair} is of the opinion that "Halo" gives rather more consistent results for this particular service than "Ferodo". The actual duty called for is not great, but apparently within the limits of Servo requirements "Halo" is preferred.

The D.O. should alter the material for the facings on the Servo from Ferodo to "Halo" accordingly.

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


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