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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).
Modifications to the Wraith carburetter, specifically increasing the choke centres.

Identifier  ExFiles\Box 7\4\  X 608 Carburetter-page05
Date  12th April 1935
  
To D.Y.
Copy to Mr. Hives.
46229
608
E/PSN.1/MN.12.4.35.

WRAITH CARBURETTER.
------------------

We send you herewith LeC 4461 showing the modified double down-draught carburetter with increased choke centres. The choke centres have been moved out to simplify the problem of drilling the long petrol feed holes between the chokes.

It will also be necessary to modify the induction pipes to suit the increased choke centres as shown.

R/PSN.

Att: LeC.4461.
  
  


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