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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).
Query regarding the smallest available size of sylphon tubing for a new petrol pump design.

Identifier  ExFiles\Box 27a\2\  Scan026
Date  14th June 1930
  
X2677

Rg.{Mr Rowledge} from E.{Mr Elliott - Chief Engineer}
c. By.{R.W. Bailey - Chief Engineer} Hs.{Lord Ernest Hives - Chair}

E2/M14.6.30.

X. 2677

RE - SYLPHON TUBING FOR PETROL PUMP.

We believe you went into the question of what was the smallest size of sylphon tube which could be obtained, and we should be glad if you could kindly send us particulars of what you found was available. We have in hand a design for a mechanically operated petrol pump for the chassis, and we propose to use a sylphon bellows with about a .050 stroke and lightly loaded poppet valves.

E.{Mr Elliott - Chief Engineer}
  
  


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