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Message: <blockquote data-quote="foton" data-source="post: 106836" data-attributes="member: 16041"><p>I just converted a 500 that was given to me to chain, I was surprised that there was slop that the pulley system vibration took off 0.035 the crankshaft how it happened I do not have a clue. but if you go the chain route 2 to 1 is the reduction I used a 15 tooth on the engine a 30 tooth on the jack shaft and I used series 60 heavy chain. and a idler gear for tensioning. seems to work very well. just info.to pass along</p></blockquote><p></p>