It is definitely the spider slipping - not the cog/lock ring, not chain slack. You can see that the spider has moved as the arms are in a different position to the crank arm.
Is there any way of fixing this?
@TM started
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It is definitely the spider slipping - not the cog/lock ring, not chain slack. You can see that the spider has moved as the arms are in a different position to the crank arm.
Is there any way of fixing this?