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).
Comparison of centre journal loads for a Flat 12 cylinder engine and a 60° V 12 cylinder engine.

Identifier  ExFiles\Box 115\2\  scan0510
Date  16th November 1939 guessed
  
COMPARISON OF CENTRE JOURNAL LOADS
FOR A FLAT 12 CYL. ENGINE. SHOWN THUS ______
AND A 60° V 12 CYL. ENGINE. SHOWN THUS - - - -
LBS.
BORE 3½
STROKE 4½
CONN. ROD CRANK 4.08
BEARING DIMENSIONS
2.75" dia x 2.0
WT. OF PISTON, RINGS, AND PIN. 1.61 lbs
CONN. ROD WEIGHTS
FORKED | PLAIN
LITTLE END | 0.8 | 0.75
BIG END | 2.0 | 1.27
FIRING ORDER
A 1 4 2 6 3 5
B 2 6 3 5 4 1
SHEET 6
  
  


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