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).
Valve spring rating chart for a Lorraine-Dietrich engine.

Identifier  ExFiles\Box 22\4\  Scan110
Date  29th March 1927
  
(13)
LORRAINE-DIETRICH ENGINE.
Valve Spring Rating Chart.
LOAD (LBS)
50
40
30
20
10
0
RESULTANT.
OUTER SPRING.
INTERMEDIATE SPRING.
INNER SPRING.
VALVE LIFT (INCHES)
.1
.2
.3
.4
VALVE CLOSED.
VALVE OPEN.
  
  


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