Posted by Unruh on October 21, 2008 at 14:32:53 from (69.77.248.142):
In Reply to: positive ground posted by Don c on October 21, 2008 at 10:14:05:
My mechanic explained to me that the difference is the way the spark jumps the gap, but I've forgotten which way it is. One way the spark jumps from the electrode of the spark plug to the ground and the other way, the other way around. He showed me, too, by shorting a spark plug with a screw driver that you could see which way the spark would jump.
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Today's Featured Article - History of the Field Marshall Tractor - by Anthony West. Any restorer who has some knowledge of turn of the century farm machinery, will recognize the name Lanz Bulldog!! This machine was to say the least unusual in its appearance. The huge flywheel and coffee percolator shaped exhaust. Along with square body lines and cylinder head protruding forward of the front axle. Would become the visual differentiation that people would quote to separate the Lanz from other period machines. The Marshall company based at the Briannia Works in Gainsborough
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