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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).
Urgent need to test a double-strength spring on the petrol control valve to prevent wear on the needles.

Identifier  ExFiles\Box 38\1\  Scan033
Date  20th September 1918
  
EH. from BY.{R.W. Bailey - Chief Engineer}

X3406
U.W.

September 20. 1918.
BY10/P20918.

CARBURETTERS.
RE PETROL CONTROL VALVE.

The above matter is becoming of the utmost importance. Every day we are getting needles back which are wearing, and it seems to me quite a simple matter to try out my suggestion as instructed in my memo BY/KB9/P26818, by which a spring of double strength is used, with the object of preventing the control valve from being rotated by the petrol, when the slots in the valve itself are out of centre.

Cannot you arrange to try this scheme without further delay?

BY,
  
  


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