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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Coil Polarity
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<blockquote data-quote="Big Sid" data-source="post: 36303" data-attributes="member: 2781"><p>On the matter of coil polarity , coil ign . To my best recollection . With plugs out , one plug wire out of its plug cap to bare the wire end . Held close to a fin with a sharpened wooden pencil in between the wire in the fin , the graphite of the pencil positioned between these two . Have some one spin the motor or flick the points creating a spark . The spark to jump to the pencil lead ,,,, a spark from the lead on the other side able to leap to the fin . The lead in between . </p><p> Closely observe the spark appearance . One side will look normal while the other side will be much different , having a wavy aura look to it . Weird looking . </p><p> If the aura side is seen to be between the plug wire and the graphite this means the polarity is correct . If the aura is seen to be between the graphite and the fin , it's wrong . Sid .</p></blockquote><p></p>
[QUOTE="Big Sid, post: 36303, member: 2781"] On the matter of coil polarity , coil ign . To my best recollection . With plugs out , one plug wire out of its plug cap to bare the wire end . Held close to a fin with a sharpened wooden pencil in between the wire in the fin , the graphite of the pencil positioned between these two . Have some one spin the motor or flick the points creating a spark . The spark to jump to the pencil lead ,,,, a spark from the lead on the other side able to leap to the fin . The lead in between . Closely observe the spark appearance . One side will look normal while the other side will be much different , having a wavy aura look to it . Weird looking . If the aura side is seen to be between the plug wire and the graphite this means the polarity is correct . If the aura is seen to be between the graphite and the fin , it's wrong . Sid . [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Coil Polarity
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