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12,718 Posts
Hi all,
I got a new issue.
I've recently and suddenly began having issues with my chain dropping off my middle ring when in the large cog in back. The chain just has a tendency to start riding up on top of the teeth, and then drops into granny when pedaling under no load. I suspect that my chainline has somehow changed, but I don't have any slop in my BB, BB cups or crank arms, and the front deraileur is not touching the chain. I guess I'll check the BB pivot next (FS frame). When in middle/big cog, I do hear a ticking sound from the chainring every crank rotation, but I have not found any bent teeth.
Apart from that, what else can contribute to this?
I got a new issue.
I've recently and suddenly began having issues with my chain dropping off my middle ring when in the large cog in back. The chain just has a tendency to start riding up on top of the teeth, and then drops into granny when pedaling under no load. I suspect that my chainline has somehow changed, but I don't have any slop in my BB, BB cups or crank arms, and the front deraileur is not touching the chain. I guess I'll check the BB pivot next (FS frame). When in middle/big cog, I do hear a ticking sound from the chainring every crank rotation, but I have not found any bent teeth.
Apart from that, what else can contribute to this?