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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Strobe Timing a Comet
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<blockquote data-quote="davidd" data-source="post: 31868" data-attributes="member: 1177"><p>Bob,</p><p></p><p>You are fine. The new BT-h has a 6 mm rod that slides into the armature through the housing to establish where the spark occurs. Unfortunately, you slide this rod through a threaded hole that has qute a bit of clearance, into the armature that has a hole with a certain amount of clearance. This means that the with the rod in place the degree wheel, which is in the crank end, will rotate about nine degrees. Thus, the question is: "upon which one of the nine degrees is the spark firing?" As it turned out with mine, it is firing on the ninth degree or all the way tight moving the rear wheel in the direction of travel.</p><p></p><p>This is a big issue if you are racing and you need to know exactly where the timing produces max power. On the street it is probably OK to be 4.5 degrees off the mark. However, I think it is good to strobe the bike once to make sure your timing procedure is consistently producing a numer with wich you are happy.</p><p></p><p>David</p></blockquote><p></p>
[QUOTE="davidd, post: 31868, member: 1177"] Bob, You are fine. The new BT-h has a 6 mm rod that slides into the armature through the housing to establish where the spark occurs. Unfortunately, you slide this rod through a threaded hole that has qute a bit of clearance, into the armature that has a hole with a certain amount of clearance. This means that the with the rod in place the degree wheel, which is in the crank end, will rotate about nine degrees. Thus, the question is: "upon which one of the nine degrees is the spark firing?" As it turned out with mine, it is firing on the ninth degree or all the way tight moving the rear wheel in the direction of travel. This is a big issue if you are racing and you need to know exactly where the timing produces max power. On the street it is probably OK to be 4.5 degrees off the mark. However, I think it is good to strobe the bike once to make sure your timing procedure is consistently producing a numer with wich you are happy. David [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Strobe Timing a Comet
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