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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).
Request for a set of plungers for J-III silent tappets with a revised clearance and reduced diameter.

Identifier  ExFiles\Box 106\5\  scan0122
Date  11th January 1934
  
RHC.{R. H. Coverley - Production Engineer}

X5960

Hs{Lord Ernest Hives - Chair}/Std.5/KW11.1.34.

We require a set of plungers for J-III silent
tappets, giving .0015" clearance in plunger housing
instead of .001" as at present.

Will you please have a set made similar to
last set (plunger to E.59267, plunger body to E.59628)
but with dia. of plunger body reduced from 0.5245" dia.
to 0.5240" dia.

We should like to try these on J-III as soon
as you can let us have them.

Hs{Lord Ernest Hives - Chair}/C.S. Steadman.
  
  


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