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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).
Drawing No. LeC.858 which shows spring diagrams for a shorter valve spring to suit stronger washers.

Identifier  WestWitteringFiles\A\September1917\  Scan0
Date  4th September 1917
  
To By.{R.W. Bailey - Chief Engineer} [struck through] from E.{Mr Elliott - Chief Engineer}
ORIGINAL
St.{Capt. P. R. Strong} Margaret's Bay.
2
c. to Ck.{Mr Clark}
Sept. 4th. 1917.
X2925/P.

Re - Shorter Valve Spring to suit stronger washers.

E3/W4917.

Please find attached drawing No. LeC.858 showing spring diagrams for the above.

E.{Mr Elliott - Chief Engineer}
  
  


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