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).
Blueprint showing a polar plot of big end loadings for a 4¼ Litre Bentley engine.

Identifier  ExFiles\Box 115\1\  scan0348
Date  24th March 1937
  
MAX. CYLINDER PRESSURE
TAKEN AS 700 LBS/□"
BUSH
CURRENT PRODN PIECES WITH A/C BIG END
TOTAL ROTATING WT 1.140 LBS
TOTAL RECIPROCATING WT. 2.000 "
CONN. ROD CENTRES. 7.950 "
BIG END AREA 2.32 □"
ANGULAR POSN OF
CRANK FROM T.D.C
INERTIA LDGS. ONLY
AT 4,500 R.P.M.
COMBINED GAS & INERTIA
LDGS. AT 4,500 R.P.M.
MAXM LOADING 2,060 LBS/□"
4¼ L. BENTLEY - BIG END LOADINGS.
F.H. SMITH 24.3.37
RM{William Robotham - Chief Engineer} 364
B.D.C
OF ROD
ROD
CAP.
T.D.C.
LBS/□"
Scale values: 600, 800, 1000, 1200, 1400, 1600, 1800, 2000, 2200
Angular positions: 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165
  
  


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