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 power output of balanced versus unbalanced twin carburettors.

Identifier  ExFiles\Box 13\2\  02-page150
Date  29th October 1931 guessed
  
COMPARISON OF POWER OUTPUT BALANCED & UNBALANCED TWIN CARBS.
STANDARD CAMSHAFT VALVE LIFT .480
STANDARD HEAD 4.78 C.R
TWIN CARBS 1 1/4 CHOKES
EX
IN
.013 CL'CE
75
55
5
B.H.P.
B.M.E.P.
R.P.M.
NORMAL TWIN CARBS
TWIN CARBS HAVING 2" EXTENSION
CARRYING A BALANCING HOLE OF
1.625 D
RM.{William Robotham - Chief Engineer} P.30
  
  


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