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).
Graph comparing the necessary ignition advance curves for a Lorraine-Dietrich engine against a Lighter Phantom engine.

Identifier  ExFiles\Box 22\4\  Scan104
Date  17th March 1927
  
7
LIGHTER PHANTOM WITH CYL. HEAD TO L.C. 2229.
ONE IGN.
TWO IGNS.
DEGREES ADVANCE BEFORE T.C.
LORRAINE
ONE IGN.
TWO IGNS.
LORRAINE-DIETRICH ENGINE.
NECESSARY IGNITION ADVANCE.
R.P.M. OF ENGINE.
50°
40°
30°
20°
10°
1000
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2000
2500
3000
3500
17-3-27
  
  


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