|   Avid 160mm Mechanical DIsc Brake Problem...HELP! | Cletus the Fetus
Aug 16, 2003 9:34 AM | | Howdy,
On my Giant NRS2I have the Avid Mech Discs. They have worked fine but I have a problem that I have not been able to fix. On the rear wheel, I cannot get the disc adjusted sothere isn't any rub from the rotor/caliper.I have tried everything, INCLUDING reading the manual (!)...
Each time I tighten the quick release, the brakes rub. They do not rub just as I get the QR in position, so I am wondering if my frame may be phoqued up
?
Please help!
Cletus the Fetus |
| Ignoring the QR issue... | næstep
Aug 16, 2003 9:54 AM | | (working under the assumption that your QR is tightened when you adjust and when you use the brakes it's important though to make sure the QR is tightened sufficiently each time)
If you're experiencing pad rub on the inside of the caliper (against the fixed pad), go to your LBS or hardware store and get a couple of shims or washers. Install them betwee the frame's mounting tab and the Avid adapter. This will nudge the whole assembly out enough to give you proper clearance.
If it's an intermitant rubbing caused by an out-of-true rotor, see the Disc Brake FAQ at the top of the brake forum for instructions on how to true a rotor.
næstep |
| Focusing in on the QR issue.... | Ricko
Aug 16, 2003 2:57 PM | | It could be that you have a slight bend in your QR rod and it's causing the axle to move slightly in the dropout when you tighten it up.
Maybe try a QR from another bike to see if the problem changes. |
| Well, you do have to ensure it's uniformly tight each time... | næstep
Aug 16, 2003 4:33 PM | | ...otherwise too loose a clamping pressure could cause some alignment problems. But once a certain level of tightness is achieved (really tight), the QR should no longer be a factor.
That's good advice to check for a bent QR rod, which could throw things off just enough. Another thing to ensure the QR is tightened the same each time are a product called Quick Nuts, which were discussed a while back on the brake forum and should come up in a quick search.
næstep |
| Quicknuts......... | Mike T.
Aug 16, 2003 5:25 PM | | .....are a wonderful invention for obtaining consistent QR pressures. I've been using them for a few months. Fiddling with the QR nut is a thing of the past.
They'd be even more useful on a fork with lawyer tabs (mine doesn't have 'em). |
| where can I get em ? | EconoLine
Aug 16, 2003 10:25 PM | | Mike,
Can you point me to a source for the Quicknuts, or tell me where to get more info on them? Thanks. |
| Get 'em............... | Mike T.
Aug 17, 2003 4:50 AM | | .......right here! The price is per nut. Here's my mo' better pic too - |
| Hmm...Sounds like mine.... | mtnbikerdude87
Aug 16, 2003 11:18 AM | | Whenever I would take my rear wheel off I would noticed that the disc would be rubbing. I've tried everthing adjusting and it never went away. Then I took out the QR Skewers and just placed the wheel in the drop out. Then I instaled the QR skewer and the rubbing was gone. Try doing this, it shouldnt take long and I hope it helps...
-mtnbikerdude87 |
| Are the pads worn out? | shiggy©®
Aug 16, 2003 12:26 PM | | If the pads are worn to the point that the spring clip rubs the caliper you will not be able to get a good adjustment without installing new pads. |
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