Originally Posted by
cny-bikeman
Number one reason for failure to reach the small cog is cable/housing friction. Disconnect the cable, push the derailleur in by hand and then release. If it did not hit he small cog before and does now recheck cabling.
Originally Posted by
blamester
Will it shift to it if you loosen the pinch bolt so there is no cable tension?
If I use the barrel adjuster to allow the shifter to reach the smallest cog, the chain just rides on top of the teeth of the largest cog when I shift it to the top. Is this still a symptom of cable tension/friction?