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 performance of Lodge and K.L.G. spark plugs under various running conditions.

Identifier  ExFiles\Box 162\1\  img046
Date  19th September 1938
  
COMPARISON TEST OF LODGE 641 THREE POINT AND K.L.G. FLB 30X PLUGS.
TESTS PERFORMED ON CHASSIS 3 B.W. No. 6 CYL. BEING USED THROUGHOUT.
LODGE 641 T.P. CURVES SHOWN THUS
K.L.G. FLB 30X
MAX. VOLTAGE ACROSS POINTS (K.V.)
PLUG GAP.
PICK-UP
SLOW RUNNING
HIGH SPEED
12.0
10.0
8.0
6.0
4.0
2.0
0
.020
.025
.030
.035
.040
R.R.J
  
  


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