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 importance of trueness for revolving members and 'Halo' surfaces on 40/50 HP servo gears.

Identifier  ExFiles\Box 73\1\  scan0211
Date  1st October 1924
  
To EP.{G. Eric Platford - Chief Quality Engineer} from Hs.{Lord Ernest Hives - Chair}
c. to Sft.{Mr Swift}
c. to Wor.{Arthur Wormald - General Works Manager}
c. to BY.{R.W. Bailey - Chief Engineer}
X9910
Hs{Lord Ernest Hives - Chair}1/LG6.10.24.
40/50 HP. SERVO GEARS.
The most important factor in order to get a smooth acting servo, is to have the revolving member true.
It is, of course, expected that the 'Halo' surfaces will be true with the shaft.
Hs.{Lord Ernest Hives - Chair}
  
  


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