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Hello everyone,

I just purchased an X.9 Rear Derailer, and am having trouble getting it to shift to the highest gear, the smallest cog on the back. The High limit screw is most of the way out, and the cable has slack in it. I can't even push on the derailer to make it slide over enough to shift.

Am I missing something here? I feel like it should automatically go to the smallest cog or even past it with no tension in the cable or high limit screw stopping it. Both the hanger and cage are straight with 0 damage to them.

If you guys have any info on how to solve this, it'd be greatly appreciated. Thanks, take care.

Matt:thumbsup:
 

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I've found this to be a problem that crops up with the X9s on frames with relatively thin derailleur hangers. The fix is to put a 1 or 2mm spacer between the hanger and the derailleur. Chainring spacers work well. I had to put a 2mm spacer on my Surly Karate Monkey to get a 10 X9 to work right on it, and a friend of mine has to use 1mm spacer under an X9 on a pre-production Turner RFX that has a slightly out of spec hanger seat. It seems that SRAM shaved their tolerances pretty close. So when combined with slacker tolerances of some other components (hangers in particular), it can create this problem. Adding a spacer will bring your derialluer a bit further out and allow it to drop to the small cog. Just make your adjustments from there and you should be fine. Start with a 1mm spacer and see what that does for you. Just don't go more than 2mm. Much more than that and you won't have enough threads engaged in the hanger to keep the derailleur secured.

Good Dirt
 

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Also to add to what Squash suggested (which is the probable solution) is to make sure the derailleur hanger isn't bent/tweaked. You need to have it check with the Park Tool DAG-1 derailleur hanger tool, not by eyeballing it.

I have seen bikes that wouldn't shift to the smallest cog due to this issue.
 

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I just bought a 9 speed SRAM a couple weeks ago, and today on my second ride the shifting was so bad it would just stick in the larger cogs and not come down at all. That doesn't seem like an alignment issue, but a spring tension or pivots problem.

When I got the bike home I cleaned everything out, lubed the pivots with some Tri-flow. This helped a little bit and it would at least shift down, but it still doesn't shift down to the smallest cog. Even with the cable disconnected and the high limit screw not in contact, it still will not shift all the way to the smallest cog. I can move it with my hand and push it down, but it will not move on it's own. Is this just a bum unit or are there some adjustments that can be done?
 
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