measuring in an X pattern from the end off the teeth to the edge of the hole. I then bolted a good sprocket to the 36 tooth sprocket and compared them and then scribed the 36 tooth where I would need to remove material which I used a dremel tool to remove the excess material. I then mounted the sprocket on a machined shaft in the lathe to see if and when it was true I then checked that there is a small amount of slop or space between the inside edge of the sprocket hole and the bikes hub so I could center it up while getting the bolts tightened up that is where I used the wire to align the sprocket on the bikes hub to get the up and down play out of the sprocket this is more important than the side to side play because the up and down play will make the chain be tight then slack.
Norman

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norms-iron-works.tripod.com
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