are mtb cassette lockrings smaller than road ones? My chain jumps when in the smallest cog, as though the chain isn't engaging with the cog fully, but the lockring doesn't look obviously too big. Is that an schoolboy error?
This sounds like one of two things ,
crap in the cable outer - lubricate it or replace it Or Bent hanger
@Dogs started
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are mtb cassette lockrings smaller than road ones? My chain jumps when in the smallest cog, as though the chain isn't engaging with the cog fully, but the lockring doesn't look obviously too big. Is that an schoolboy error?