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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).
Proposing new pressure plate springs for the 25-30 model clutch, referencing drawing N.Sch.4732.

Identifier  ExFiles\Box 103\1\  scan0195
Date  15th January 1936
  
x512
Rua H.E.Smith

BT.{Capt. J. S. Burt - Engineer}

E/HDY.{William Hardy}1/HP.15.1.36.

C. E.{Mr Elliott - Chief Engineer} Hs.{Lord Ernest Hives - Chair} Ex. BUG. Hs{Lord Ernest Hives - Chair}/FM.

Clutch - 25-30.

We send herewith N.Sch.4732 which shows the pressure plate springs we propose for this car with the R.R. clutch already referred to in our E/HDY.{William Hardy}2/HP.13.1.36.

To get the lowest possible rating we have lengthened the spring caps as much as the operating shaft boss permits, and we ask for the boss to be machined to reduce the clearance variation.

N.Sch.4732 herewith.

E/HDY.{William Hardy}
  
  


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