Rolls-Royce Archives
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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).
Graph comparing the B.M.E.P. of a Phantom engine using a Solex twin carburetter with different chokes against the standard Phantom carburetter.

Identifier  ExFiles\Box 121\2\  scan0101
Date  30th January 1929
  
SOLEX TWIN CARBURETTER ON PHANTOM ENGINE
B.M.E.P. WITH 34 M.M. AND 32 M.M. CHOKES. COMPARED WITH STD. PHANTOM CARBURETTER.
34 M.M. CHOKE GIVES 1.055 □" FREE AREA.
32 M.M. CHOKE GIVES .893 □" FREE AREA.
ONE CHOKE SUPPLIES THREE CYLINDERS.
B.M.E.P. lbs/□"
R.P.M.
SOLEX 34 M.M. CHOKES
SOLEX 32. M.M. CHOKES
STD. PHANTOM. CARB.
a.p/
  
  


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