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question - RD shifting tension

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question - RD shifting tension

Old 08-03-11, 02:52 PM
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Inertianinja
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question - RD shifting tension

I replaced the cables on my Red setup the other day.

Everything is shifting perfectly, except that there is a lot more resistance when shifting the RD than there usually is - as if there's suddenly a lot more tension. shifting to smaller cogs is also suddenly *very* snappy, as if it can't wait to move to the lower cog.

Reducing tension vía the barrel adjuster would misalign the RD.
again - everything is shifting correctly, the chain is not jumping, there's no noise.

it's not necessarily a bad thing but, previously, moving up the cassette was nearly effortless.

This happened once before with my Force setup (required a lot more effort than 'normal' to shift the RD), but i can't remember what i did to fix it.

any ideas?
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Old 08-03-11, 03:44 PM
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seejohnbike
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check the RD cable and housing all the way through. Maybe you kinked the cable and it's rubbing the housing? Maybe put some triflow on the cable/in the housings?

Otherwise, you can always try taking it all apart, and putting it back together again. Maybe it's some anomaly/artifact of the way you did it the first time. If it happens again, then maybe it has something to do with your gear.
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Old 08-03-11, 04:01 PM
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Originally Posted by Inertianinja View Post
I replaced the cables on my Red setup the other day.

Everything is shifting perfectly, except that there is a lot more resistance when shifting the RD than there usually is - as if there's suddenly a lot more tension. shifting to smaller cogs is also suddenly *very* snappy, as if it can't wait to move to the lower cog.

Reducing tension vía the barrel adjuster would misalign the RD.
again - everything is shifting correctly, the chain is not jumping, there's no noise.

it's not necessarily a bad thing but, previously, moving up the cassette was nearly effortless.

This happened once before with my Force setup (required a lot more effort than 'normal' to shift the RD), but i can't remember what i did to fix it.

any ideas?
Set up the limit screw so that it stops at the smallest cog/sprocket (pretty sure you've done this), the RD should automatically default to this without any cable attachment. Connect cable and go to the lowest gear and check the distance between the largest cog and the upper pulley of the RD...it should be 6mm. Adjust your B screw accordingly. This usually solves that "tautness". If you are used to Shimano, you automatically set the clearance at "just enough to clear" cogs and jockey. I know I did when I moved to SRAM.
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Old 08-03-11, 08:27 PM
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What kind of cables did you use? First, I'd make sure the cable housing slid fully into the groove in the brake hood. Some cables come with ferrules that are too large to fully slide in. This could be causing a kink or something.

Also, make sure you cut down the cable housing to an appropriate length. If the cable loop that goes right into the barrel adjuster of the RD is too short this could be a problem. Make sure all your cable housing cuts are clean and haven't ovalized the end as well.
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