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Old 10-30-07, 09:54 AM   #1
Not the Slowest
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NEW Rear Brake Cable and housing Sticking

I had a new rear cable and housing put on my road bike in the last 45 days by the LBS.

I have had in the past 30 days sticking on the cable in the rear housing by the seat post.

I have some park lube and re-lubed the cable, but did not pull it all the way through. This works for a while and then gums up and I nee to start again. Flushed the tube with WD40 and that solves the problem for a day or two. The rear brake housing is fine. the jam is in the tube.

Should I get a new housing?
New Cable?
Different Lube or cleaner?

THanks
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Old 10-30-07, 10:23 AM   #2
jqnj
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Make sure that the housings are not pinced at the ends where the cable cut was made. Take a pawl or similar and try to open up the pinched end if possible.
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Old 10-30-07, 10:46 AM   #3
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Why try to fix someone else's problem that you paid money for? Take it back!!!

Yeah, it will be a simple fix and you could do it yourself but since you didn't want to tackle it from the start make the LBS fix it.
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Old 10-30-07, 11:12 AM   #4
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Yes I could bring it back, but then what fun is that?

I'll do it anyhow, just figured if I missed something. I mean therer isn't much to this or was there?
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Old 10-30-07, 12:46 PM   #5
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You said "in the tube". Do you have internal brake cable housing?

I'd check the following:
1. The aforementioned improperly cut housing - the curly metal bit points in and rubs the cable, binding it ever so slightly.
2. Check the plastic liner in the housing - if it's missing or damaged somewhere it'll increase friction significantly.
3. If you have internal housing, make sure there's enough in there to allow the cable free movement. If it's stretched out inside and you turn the bars or something it may bind.
4. Check the end of the cable to make sure every strand of wire is there. If there's one strand missing (sort of a "gap" in the circumference of the cable), that strand may be tangled up in itself back inside the housing.
5. Make sure the cable housing is big enough to let the cable move freely. If they used a thicker cable in a thin housing, there will be a lot of friction.
6. Make sure there is enough housing that the cable doesn't get pinched. At the same time make sure that there isn't too much housing - a hard curve in short section of cable housing will bind the cable.
7. Verify the brake springs open correctly (it could be binding). When you disconnect the cable from the rear brake, verify that the cable moves freely. Check also the brake lever although that's usually fine.
8. As a last ditch measure, you might be able to increase the spring tension in the rear brake, depending on the model. This works if you have a light action rear brake paired with a lever that doesn't have a spring in it to help the lever return to its "ready" position.

Hope this helps,
cdr
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