Fixing a Warped Rotor

[BrewMaster]

So I've only had my BB7s since June when the bike was new, but already the rear rotor is warped to the point where it is hard to set up the rear brakes so they don't rub the pad.

Is it possible to re-flatten a rotor without doing even more damage? If so, how should I do this?

Thanks.

[CalEpic]

If it's not that bad, just take an adjustable wrench and slowly bend it back into position a little at a time.

C

[tkblazer]

there was a thread about this topic not too long ago

Let's get this straight right now!!!

[BrewMaster]

Thanks Nam. I think I will buy a new rotor and then play around with the warped one to see if I can make it live again.

[2wheel_lee]

I had a rotor that had a bend in it. It wasn't too bad, but it wobbled enough to heavily rub both sides. I noticed it the night before I did a fast and steep DH ride. After the ride, the rotor was straight! I'm guessing that using it [a lot] under those conditions - I nearly cooked the brakes - may have straightened it out. That was a couple years ago, and I am still using that rotor.

[Chewyeti]

Sam...


i have some nice barely used 6" and 8" hayes rotors..... tale your pic for the trade of a tasty brew

[roadkillross]

there is a tool made by park tools, that perfectly hooks to the rotor and you bend it

[BrewMaster]

Originally Posted by Chewyeti

Sam...


i have some nice barely used 6" and 8" hayes rotors..... tale your pic for the trade of a tasty brew

Forgive my ignorance, but would Hayes rotors work with Avids? Do they all have the same bolt pattern for attaching to the hub? If it works, I'll take you up on the offer.

[roadkillross]

yeah any rotor should work with any caliper. ive had trouble with hope rotorson my hayes just because the machined center was a tad bit wide. other than that your golden. ppl will jsut think your running hayes.
the only different hub patterns are shimano rotors with the centerlock. other than that, they'll 6-bolt.

[Chewyeti]

yep... 6 on 40mm iirc....

ive had both hayes and avid rotors on my ride... all the same.

bring some tasty bier and swap em at my casa. got torx sockets and loctite ready for ya.

[DownhillWebKook]

Pony up a few bucks to buy a new one from the "take off" bin at your local shop.

[BrewMaster]

Originally Posted by DownhillWebKook

Pony up a few bucks to buy a new one from the "take off" bin at your local shop.

You can't beat free99. It's the best price.

[Chewyeti]

all better?

[Abui]

Originally Posted by BrewMaster

So I've only had my BB7s since June when the bike was new, but already the rear rotor is warped to the point where it is hard to set up the rear brakes so they don't rub the pad.

Is it possible to re-flatten a rotor without doing even more damage? If so, how should I do this?

Thanks.

Park Tool site. If you look at the pictures the tool is really working on bending the supporting arms rather than the rotor itself.

Adjust your BB7's so that the rotor is as close to the inside brake pad as possible. Unlike a hydraulic brake only the outside pad of the BB7 moves so every braking usage tends to warp the rotor.

edit - if you use a non-Avid rotor check (how?) that the arms are as beefy as the Avid.

[BrewMaster]

Originally Posted by Chewyeti

all better?

I haven't ridden it yet, but things look to be in great shape. I am hopeing to ride today. Thanks for the rotors Aaron!