First time posting, hope I can get some suggestions on this weird issue I've noticed with my shifting. I have a fairly decent understanding of how to maintain gears myself, and have made quite a few attempts at trouble shooting this, so unless I've missed something it seems to be something beyond the obvious 'reindex, replace cable-housing, lube chain' sort of thing.
So basically, my 9-speed shifters which are a few years old, seem to only click through 8 speeds, both ways. This manifests in the chain always 'skipping' a cog on the 9-speed cassette no matter how I index, although I think the cog it skips varies depending on whether I'm shifting up or down.
- I have recently replaced the chain, the cassette, the cables (lubed) AND the housing, so I am fairly certain it is none of these.
- The deraileur seems to be indexed correctly: transmission is quick and crisp and and both extermes of the cassette can be reached when shifting through all the speeds.
- I have come off the bike on the the derailleur side before, but the fact both extremes can be reached seems to suggest a bent mount isn't the problem?
- The shifter seems to physically only click through 8 speeds, despite most definitely being 9 speed.
- Chain is 9 speed
For all I know it could be a common problem, but not one I'm familiar with. Is there some sort of adjustment needed on the shifters themselves?
Any informed suggestions greatly appearciated!