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).
Performance graph comparing different camshaft configurations on a 'Japan' engine, plotting Brake Horsepower and Brake Mean Effective Pressure against engine RPM.

Identifier  ExFiles\Box 122\1\  scan0064
Date  21th May 1930
  
V868.
CAMSHAFT COMPARISONS ON "JAPAN"
TWIN ZENITH CARBS - 26 M/M CHOKES. SMALL INDN PIPE (1.25 INT. DIA)
5.25/1 COMPN RATIO. OPEN EXHAUST.
B.H.P. (CORRECTED FACTOR)
B.M.E.P. lbs/sq"
R.P.M.
B.M.E.P.
B.H.P.
112° CAMSHAFT
116° CAMSHAFT
110° CAMSHAFT
VALVE BOUNCE HERE
112° CAMSHAFT LONG DURN
116° CAMSHAFT LONG DURN
110° CAMSHAFT SHORT DURN
(AS USED ON STD "CHINA")
ael
21-5-30
  
  


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