Bent rear brake roter

[kawi35]

My brother has a 02 YZ 250 and the other day when we went riding we came back and found out his rear brake roter is bent. is their any way we can bend it back w/o makin it worse? its not really bad but its bad enough to have to do something adout it. buying a new one is too expensive so any help is appreciated.

Thanks

 

[Rcannon]

I straightened mine with a 12" crescent wrench. It was not perfect, but plenty good enough to used until it needed to be replaced. I know it sounds brutal, but there is little to lose, right?

 

[Glitch]

Maybe take it off the bike and put in it a vise. Then tightnen the vise and it will bend the rotor back into its original shape.

 

[CanadianRidr]

I have heard of the cresent wrench method before. Just put the bike on a center stand, and spin the rear wheel, where you see the wheel slows down or just stops mark that area with a marker and bend till it spins smooth :thumb:

 

[Rcannon]

It honestly works. I went out and checked mine again. My bent one was a front, so it was thinner.

You would need a good dial indicator to see the bent area after repairing.

 

[2000SE]

id do the same thing..."may the wrench be with you! "

 

[YZ250]

Make sure the rim is straight, it can fool you into thinking the rotor is bent when it's the rim that is actually bent. :yeehaw: :yeehaw: :yeehaw: Aren't those things cool?

 

[MotoBrat911]

Yea I have heard of the cresent wrench method also. Give it a try! GOOD LUCK! ;)

 

[Rcannon]

Please tell us how it works!

 

[kawi35]

thanks guys it woked good!! the only thing is i still have a little bend in it but its good ill eventually get the little bend out. :thumb:

 

[smb_racing]

I'd be extremely leary of prying on the rotor while attached to the hub, the stress could crack it. Take off the rotor and lay it on a flat area and check it with a straight edge, then make the necessary adjustments in a vise. If you really want it to be perfect take it to a machinist and have them straighten and surface grind it, much cheaper than buying a new one.