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Old 05-18-07, 08:43 AM   #1
ebow3d
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105 brake caliper adjustement (single pivot)

I've just installed these 105 brakes. The problem is that after I pull the brakes, it pulls skew and chafes against the one side of the rim. Very irritating. How do I sort this out?
Here's a pic of the brakes. They are not dual pivot.
[IMG][/IMG]
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Old 05-18-07, 09:03 AM   #2
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There is a nut in between the caliper and the frame that the spring passes through. It should be able to be rotated with a 13mm (or so) cone wrench, or offset brake wrench. It looks like you would want to turn it counterclockwise to move the caliper from right to left, hold that nut in place and torque down the mounting nut behind the brake arch. Make sure you have a starred washer between the caliper and the frame to keep it from rotating.
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Old 05-19-07, 02:59 AM   #3
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Originally Posted by tool boy
There is a nut in between the caliper and the frame that the spring passes through. It should be able to be rotated with a 13mm (or so) cone wrench, or offset brake wrench. It looks like you would want to turn it counterclockwise to move the caliper from right to left, hold that nut in place and torque down the mounting nut behind the brake arch. Make sure you have a starred washer between the caliper and the frame to keep it from rotating.
I've tried that. Problem is, its either too tight and stays close after I release the brake lever, or its too loose. I can't seem to find the right torque here. Anybody knows the secret? This is really frustrating
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Old 05-19-07, 07:46 AM   #4
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sometimes getting the housing length just right is key for centering a single pivot. i also sometimes don't torque the mounting bolt down super tight. sounds weird but try loosening it a little and see what happens. they can be a pain, but i find if i can get it set up right with the mounting bolt a little loose (which might mean a little longer or shorter housing length) then i can tighten the mounting bolt down and be set.
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Old 05-19-07, 08:55 AM   #5
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You should be able to torque the mounting bolt down super-tight. It sounds as if the adjustment is too tight to allow the brake arms to pivot easily. This is not adjusted by the mounting bolt, but by the 13mm guy that screws onto the center-screw and holds the pivot-arms in place.
Either that, or the cable housing is too long/short and is forcing the brake to one side.
I've got the same brakes:

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Old 05-19-07, 09:44 AM   #6
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Originally Posted by ebow3d
I've tried that. Problem is, its either too tight and stays close after I release the brake lever, or its too loose. I can't seem to find the right torque here. Anybody knows the secret? This is really frustrating
When you say too loose, do you mean the original problem of flopping to one side? This is where the starred washer comes into play to keep the caliper in place.

timcupery is on the money!
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