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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).
Semi-expanding carburetter for the Phantom II, noting an approximate 7 B.HP gain.

Identifier  ExFiles\Box 179b\3\  img295
Date  4th March 1933
  
R.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell}
c. S.G. W.r.
c. A.H. Da.{Bernard Day - Chassis Design}
c. Hy.{Tom Haldenby - Plant Engineer} Rdy.

Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell}1/KT.4.3.33.

P.II. SEMI EXPANDING CARBURETTER.

Attached is a curve showing that the total gain, due to the large air valve semi expanding carburetter, on the Phantom II, is approx. 7 B.H.P.

These curves (Rn.{Mr Robinson}P.54) are in reference to the preliminary report Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell}5/MA.6.2.33.

Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell}
  
  


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