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 power curves and engine specifications for Rudge and Bentley units.

Identifier  ExFiles\Box 133\1\  scan0023
Date  13th March 1936
  
C 19
500 CC RUDGE UNIT
FIG. XVII
ESTIMATED COMPARISON OF RUDGE AND BENTLEY
POWER CURVES
VALVE TIMINGS (.020 CLCE)
RUDGE AND BENTLEY
I.O. 4° E
E.O. 50° E
I.C. 50° E
E.C. 7° L
HIGH POWER
I.O. 2° E
E.O. 51° E
I.C. 28° L
E.C. 7° L
HIGH POWER (TWIN INLET) HEAD WITH ADDITIONS FOR MOTORING LOSSES. CR{Mr Cra???ster / Mr Chichester} = 7.3
ADDITION OF DIFFERENCE IN MOTORING LOSSES.
STD BENT
RUDGE C.R. = 7.3
STANDARD BENTLEY S/C CR{Mr Cra???ster / Mr Chichester} = 7.3
STANDARD BENTLEY S/C CR{Mr Cra???ster / Mr Chichester} = 6.5
INLET AREA LITRE (BORE 3.250)
STD BENTLEY = 2.520 IN²
HIGH POWER = 3.680 IN²
RUDGE = 4.500 IN²
M.E.P.
R.P.M.
H²O / 13.3.36
  
  


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