Disk brake sticks to one side
05-18-14 | 10:00 PM
#1
Thread Starter
Senior Member
Joined: Jun 2012
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Disk brake sticks to one side
As illustrated here:
bike 2 - Imgur
Its sticking to one side... when the wheel moves it barely even moves.
Please help! thanks.
bike 2 - Imgur
Its sticking to one side... when the wheel moves it barely even moves.
Please help! thanks.
05-18-14 | 10:09 PM
#2
Senior Member
Joined: Apr 2009
Posts: 39,897
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From: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
There are a number of tutorials on adjusting disc brakes. It's an easy straightforward, step by step process.
However before repositioning the brake, see if the wheel is installed fully and straight. If the wheel was returned to the same position as where it was before the brake wouldn't need adjusting.
.
However before repositioning the brake, see if the wheel is installed fully and straight. If the wheel was returned to the same position as where it was before the brake wouldn't need adjusting.
.
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FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
05-19-14 | 02:09 AM
#3
Senior Member
Joined: Mar 2008
Posts: 8,687
Likes: 300
But that's a mechanical brake, not a hydraulic one, right?
Mech brakes only pinch from one side, relying on the rotor to flex over a tiny bit until the other pad makes contact. They're MEANT ro run REAL close on one side.
Mech brakes only pinch from one side, relying on the rotor to flex over a tiny bit until the other pad makes contact. They're MEANT ro run REAL close on one side.
05-19-14 | 03:20 AM
#4
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Joined: Aug 2006
Posts: 1,898
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If the outside face of the rotor is intermittently rubbing on the brake caliper, the rotor will need truing.
Rotor Truing: https://www.youtube.com/watch?v=0fosSuyiCDE
If the outside face of the rotor is continually rubbing on the brake caliper it will need realigning.
* Adjust the inner pad so that the rotor is centered in the brake caliper when the brake lever is squeezed.
* When that's done squeeze the brake lever and wrap a rubber band around it to keep it squeezed.
* Loosen the two bolts that attach the brake caliper, you only need them loose enough so it can move.
* When the bolts are loosened the brake caliper should move it's position.
* After the brake caliper has moved it's position the bolts can be re-tightened, when re-tightening swap between the bolts and tighten small amounts at a time.
* Take the rubber band off the brake lever.
* Adjust the inner pad so it moves away from the rotor enough that it doesn't rub.
* The brake cable might need adjusting to move the outer pad closer to the rotor, the closer the pads are to the rotor the less lever pull there will be, this can be done with the barrel adjuster on the brake lever, if the brake caliper has a barrel adjuster on it you can also adjust the cable there.
Rotor Truing: https://www.youtube.com/watch?v=0fosSuyiCDE
If the outside face of the rotor is continually rubbing on the brake caliper it will need realigning.
* Adjust the inner pad so that the rotor is centered in the brake caliper when the brake lever is squeezed.
* When that's done squeeze the brake lever and wrap a rubber band around it to keep it squeezed.
* Loosen the two bolts that attach the brake caliper, you only need them loose enough so it can move.
* When the bolts are loosened the brake caliper should move it's position.
* After the brake caliper has moved it's position the bolts can be re-tightened, when re-tightening swap between the bolts and tighten small amounts at a time.
* Take the rubber band off the brake lever.
* Adjust the inner pad so it moves away from the rotor enough that it doesn't rub.
* The brake cable might need adjusting to move the outer pad closer to the rotor, the closer the pads are to the rotor the less lever pull there will be, this can be done with the barrel adjuster on the brake lever, if the brake caliper has a barrel adjuster on it you can also adjust the cable there.
