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 comparison graph between a single cylinder unit and a main engine.

Identifier  ExFiles\Box 133\1\  scan0085
Date  10th July 1936
  
BENTLEY
FIG. IV
COMPARISON OF SINGLE CYLINDER UNIT & MAIN ENGINE
CYLINDER HEADS:- STANDARD BENTLEY E.B. 615 & E.B. 1517
VALVE TIMING:- I.O. 4°E; I.C. 51°L; E.O. 51°E; E.C. 7°L
C.R. = 6.4
OPEN EXHAUST.
BORE - 3.25"
SINGLE CYLINDER (N.A.)
SINGLE CYLINDER (MAIN ENGINE DEPT)
MAIN ENGINE
B.M.E.P.
B.H.P.
R.P.M.
J.L.E.
10-7-36
  
  


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