I have a SS cross bike (horizontal dropouts) that is now running a 8 spd Nexus with Jtek dropbar shifter and I just swapped out the rear cog from 19T to 16T. I changed the gearing because I plan to do some group rides on pavement soon (= more speed) and I currently wasn't using gears 1,2 much. I couldn't increase the front ring because I'd have no tire clearance.
My scenario is since I swapped the cogs, the wheelbase of the bike has lengthened just enough that the shifting cable is tighter and has screwed up the shifting. My barrel adjuster doesn't have enough travel to allow the yellow marks to align (4th gear) and I really don't want to adjust the cable clamp(nut) on the hub every time I make a gearing change.
I can get the yellow marks to align on 5th gear though. Since I can quickly use the barrel adjust to align the yellows on 5th gear, I'll lose 1st. My question is: Will I have the rest of the gearing without issue? It seems that the gears engage but just not as crisply as before.
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Thread: Nexus Redline gear indexing