Was given an old(er) giant escaper, replaced the cables, housing, cassette (9speed Sram) and chain (9speed Sram).
The problem I am having is the rear shifter cable is totally slack in the smallest cog. If there is any tension at all on the cable then the chain does not ride properly on any of the other cogs as if there is too much cable tension.
Here is what i have done to troubleshoot this:
1. I have aligned the derailleur hanger (park dag-2).
2. I have ensured the hanger is tight to the frame.
3. I have completely cleaned and lubed the derailleur.
4. I have uninstalled and reinstalled the cassette. Torquing the lockring down to the specification listed on the lockring.
5. I have double checked the high limit screw.
6. I have ensured the cables and housing are seated properly in the frame and that the housing is not too long or too short, (sized them according to th Barnetts maintenance manual).
7. I have checked to make sure the hub is properly seated in the rear dropouts.
8. I have checked the chain is the proper length (per barnetts manual as well).
9. I have also checked that the cable goes in the correct direction from the adjusting barrel to the anchor bolt.
Shifting is ok up and down the cassette but there is no tension on the cable in the smallest cog. When I snug the cable even slightly then there is too much tension for the rest of the cogs and shifting down to each smaller cog is affected.
This is a shimano LX rear derailleur, 9 speed rapidfire shifters.
I am at a loss of what else to do to trouble shoot this. The cable shouldn't just be flopping on the top tube.
Anyone have a clue?