Warped disk

[chris95]

Hi guys, When going over my Dh bike today i noticed that the back disk was fairly warped. Now I have no idea how this happened but can only think i hit a rock or something when out dhing on sunday. The wheel now hardley spins due to the disk constsntly hitting the pads.

Is there a trick to fixing this or will i need a new disk

and i am running a 203mm avid G2 rotor.

 

[RYDA]

Flat surface and a hammer = ghetto fix... but you probably should look into a new rotor.

 

[harmonix1234]

I bent mine back to shape with a shifter closed right down on the rotor (make sure the shifter is clean first).

Just do it by eye bit by bit as you rotate the wheel.
Have a torch on the ground shining up through the brake assembly and you'll get a very accurate view of where the warp is as the rotor passes close to the pads.

Iv'e done it a few times and worked a treat every time.

 

[3viltoast3r]

I parked a 2.34T car on one of mine.....But it's properly warped and needs replacing

 

[MJS]

I bent mine back to shape with a shifter closed right down on the rotor (make sure the shifter is clean first).

Just do it by eye bit by bit as you rotate the wheel.
Have a torch on the ground shining up through the brake assembly and you'll get a very accurate view of where the warp is as the rotor passes close to the pads.

Iv'e done it a few times and worked a treat every time.

This is what I do. Take your time, constanstly re-check it as you bend it back, lay it on a perfectly flat surface to check.. Never had a problem with this method.

 

[aidz44]

Correct me if i'm wrong. i thought there was a machine that could detect where the disc is out and re-bend it. Atleast that what a LBS told me ...

 

[BT180]

If you want to do it properly use a rotor truing fork such as - http://www.parktool.com/products/detail.asp?cat=14&item=DT-2

If not the ghetto shifter method does the same thing.

 

[mattyd]

If you want to do it properly use a rotor truing fork such as - http://www.parktool.com/products/detail.asp?cat=14&item=DT-2

If not the ghetto shifter method does the same thing.

That fork just looks like a fancier version of a shifter to me.
What about G clamping it between two bits of timber and putting it in the freezer for a few hours.
Never tried this myself but might be worth a try.

 

[3viltoast3r]

That fork just looks like a fancier version of a shifter to me.
What about G clamping it between two bits of timber and putting it in the freezer for a few hours.
Never tried this myself but might be worth a try.

Wouldnt it be better in the oven? Well maybe not wood, but you can find an alternative im sure...

 

[scblack]

The technical tool called a shifter is the go. Just keep bending carefully, spinning, bending, spinning, until you have it true.