Bicycle Mechanics - Binding STI lever

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Coaster
01-01-03, 07:24 PM
Has anyone experienced this? When moving the r/s shifter to upshift, about halfway through the travel, it gets a little harder to move, then frees up to complete the travel. It's bindig mid way. Any idea why this is happening?
Thanks,
Rich

khuon
01-01-03, 09:18 PM
It might be in the brifter mechanism itself but before you go tearing it apart, I'd first check the cables. There might be a kink somewhere or rust or something. Check especially near the housing ends.
trmcgeehan
01-02-03, 03:25 AM
My LBS guy talked me into replacing rusted, frayed brake cables with stainless steel cables. They only cost a buck or two more than steel, and they'll never rust in the housings.

pokey
01-02-03, 06:50 AM
Check the small serew at the upper back of the lever.You don't have to take anything apart.Screw often loosens and causes several different shifting problems.
Coaster
01-02-03, 04:56 PM
I should have mentioned that the cable housings have been removed, so a binding cable is not the problem.
Pokey, can you be more specific-which screw are you talking about?
Thanks,
Rich
pokey
01-02-03, 06:33 PM
You may have to manipulate the levers, and sometimes depending on the model, the small lever obscures it.
RainmanP
01-03-03, 05:43 AM
I had this problem with my 105 lever, and it was just what Pokey describes. Before I could get to the LBS for them to see what the problem was, the screw came completely out, naturally on my dark morning commute. I heard it but never could find it. Luckily the wrench was able to pull a matching screw from the magic box.
Coaster
01-03-03, 05:42 PM
No loose screws. It seems to be something internal. I've lubed it up good and it's gotten a little easier. I may be wrong, but I thought that the action should be smoother than it is. Of course, this is hard to relate in words.
Thanks,
Rich