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 KLG spark plugs at various plug gaps and engine conditions.

Identifier  ExFiles\Box 162\2\  img002
Date  21th June 1939
  
COMPARISON TESTS OF LODGE 640 SINGLE POINT AND K.L.G. FLB30X PLUGS.
TESTS PERFORMED ON CHASSIS 38.IV No. 6 CYL. BEING USED THROUGHOUT.
LODGE 640 S.P. CURVES SHOWN THUS. ---
K.L.G. F.L.B. 30X
MAX. VOLTAGE ACROSS POINTS (K.V.)
PLUG GAP.
PICK-UP
SLOW RUNNING
HIGH SPEED
E.50/8
21.6.39
  
  


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