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Disc brakes rubbing

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orcommuter Offline
New Member

portland oregon
Posts: 5
Joined: Jan 2010
Post: #1
Disc brakes rubbing
I ride a 2009 trek road bike with disc brakes and once and awhile the rear rotor will rub initially on my ride then after using brakes i'll lose the sound is this a normal thing? While at ubi class i installed new cables and adjusted pads rotor clean etc.
Jan 11, 2010 07:04 AM
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KDC1956 Offline
Member


Posts: 91
Joined: Dec 2009
Post: #2
RE: disc brakes
I would take it back to the shop and have them to look at it.Is the disc lose? or it could be the wheel is a little out of true. Hope this helps.

My dad always told me a Sledge a matic can fix any thing.
Jan 11, 2010 01:32 PM
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orcommuter Offline
New Member

portland oregon
Posts: 5
Joined: Jan 2010
Post: #3
RE: disc brakes
(Jan 11, 2010 01:32 PM)KDC1956 Wrote:  I would take it back to the shop and have them to look at it.Is the disc lose? or it could be the wheel is a little out of true. Hope this helps.

the funny thing is once im rolling and have applied rears the contact sound disappears. i recently attended a ubi class in portland oregon and in the class we went completely through our bikes so running gear is ok rotor torqued etc
Jan 15, 2010 07:06 AM
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Jordan300 Offline
Senior Member

Gainesville, FL
Posts: 483
Joined: Apr 2009
Post: #4
RE: Disc brakes rubbing
So when you put it on your stand and spin the wheel does it rub then? If you eye it can you see where its hitting? You might just need to back out the caliper 1/8 of a turn.

Also one thing I've experienced. Once the bike is on the ground, completely loosen the quick release then re-tighten it. I have had a few times where the wheel was not completely in the dropouts when it was put on the bike. The weight of the bike will set the wheel correctly, if that is an issue.

Hopefully one of these things will solve your issue.
Jan 15, 2010 07:41 AM
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Bill Offline
Veteran Member

NY,USA
Posts: 2,766
Joined: Sep 2009
Post: #5
RE: Disc brakes rubbing
Could it be something in the Hydraulics, like a small foreign object tiny pebble etc? I do have a bike which I have not yet got to this winter but soon hopefully that has disc brakes. There is also an article here which may shed a little light but no guarantee...
http://www.parktool.com/repair/readhowto.asp?id=125

Good maintenance to your Bike, can make it like the wheels are, true and smooth!
Jan 15, 2010 09:02 AM
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orcommuter Offline
New Member

portland oregon
Posts: 5
Joined: Jan 2010
Post: #6
RE: disc brakes
(Jan 11, 2010 01:32 PM)KDC1956 Wrote:  I would take it back to the shop and have them to look at it.Is the disc lose? or it could be the wheel is a little out of true. Hope this helps.

thanks
(Jan 15, 2010 07:41 AM)Jordan300 Wrote:  So when you put it on your stand and spin the wheel does it rub then? If you eye it can you see where its hitting? You might just need to back out the caliper 1/8 of a turn.

Also one thing I've experienced. Once the bike is on the ground, completely loosen the quick release then re-tighten it. I have had a few times where the wheel was not completely in the dropouts when it was put on the bike. The weight of the bike will set the wheel correctly, if that is an issue.

Hopefully one of these things will solve your issue.

you know the second item you mentioned
i believe is the issue went through that yesterday thanks for the help
Jan 16, 2010 07:19 AM
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Jordan300 Offline
Senior Member

Gainesville, FL
Posts: 483
Joined: Apr 2009
Post: #7
RE: Disc brakes rubbing
Awesome, Glad I could help.
Jan 16, 2010 10:44 AM
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