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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).
Testing a spring for the 20/25 HP Diamond Engine mounting torque reaction dampers.

Identifier  ExFiles\Box 104\1\  scan0135
Date  12th February 1932
  
To BY.{R.W. Bailey - Chief Engineer} From Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux}
c. to Mx.{John H Maddocks - Chief Proving Officer}

Y5005
Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux}4/MJ.12.2.32.

Re. 20/25 HP. Diamond Engine
Mounting Torque Reaction
Dampers.

In reply to Mx{John H Maddocks - Chief Proving Officer}26/T8.2.32.

We have tried out the spring E.71111 and find that it will give more consistent results than the present standard spring. We find, however, that it is necessary to drill the hole for the split pin at the extreme end of the bolt to obtain the load required.

Hs{Lord Ernest Hives - Chair}/G.W.Hancock.
  
  


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