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).
Power curve graph for a Phantom II engine comparing performance with different camshafts.

Identifier  ExFiles\Box 13\2\  02-page081
Date  3rd June 1931
  
CURVE 1
PH. II POWER CURVES OPEN EXHAUST 4-6 COMP. RATIO
A TWIN CARB. 1.30" CHOKES (STD COMP. RATIO)(R TYPE 110° CAMSHAFT)
B " " " " ( " " ) ( STD CAMSHAFT )
B H P
150
130
110
90
70
50
30
R P M
500
1000
1500
2000
2500
3000
3500
A
B
R.A.G. / 3-6-31
  
  


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