Bike Forums - Warped Rotor?

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specialeyes

10-04-04 12:11 PM

Warped Rotor?

I have Bontrager hubs and XT Disc brakes. I thought I .replaced a warped rotot. After tightening the new rotor down it appears to be warped too. Any thoughts?

Grasschopper

10-04-04 12:24 PM

How about proper torque on the bolts. If you over torque them or torque them unevenly you will warp the rotor.

Dannihilator

10-04-04 12:29 PM

I have to agree with Grasschopper with this one.

Raiyn

10-04-04 12:47 PM

Did you go around tighhtening the bolts down in a circular pattern or did you tighten them down in a star pattern (similar to lug nuts on a car)? If you did the circle pattern, chances are that's what warped your rotor.

specialeyes

10-04-04 03:37 PM

Any ideas where I can get a torque wrench that goes down to 18 in. lbs.? I found a craftsman, but it only goes as low as 25 in.lbs.

specialeyes

10-04-04 03:39 PM

Star pattern.

Grasschopper

10-05-04 04:56 AM

Quote:

Originally Posted by specialeyes

Any ideas where I can get a torque wrench that goes down to 18 in. lbs.? I found a craftsman, but it only goes as low as 25 in.lbs.

Not quite there but close http://www.harborfreight.com/cpi/cta...temnumber=2696

dfrancefort

10-05-04 05:15 AM

Check to make sure that the rim is true, if it is not it can make the rotor appear to be warped.

Grasschopper

10-05-04 06:22 AM

Quote:

Originally Posted by Grasschopper

Not quite there but close http://www.harborfreight.com/cpi/cta...temnumber=2696

Ok also found these Park TW-1 and Syntace

specialeyes

10-05-04 06:57 AM

Thanks a lot!

free_pizza

10-10-04 05:32 PM

ehhmmmmmm.. i think i also warped my rotor.

i was riding behind a friend a couple of days ago, and he slipped and fell, i had no time to react and my front rotor hit this rear tire. I wasnt riding very fast, but could this have been enough force to bend my rotor?

Raiyn

10-10-04 10:23 PM

Quote:

Originally Posted by free_pizza

Possibly

free_pizza

10-11-04 03:00 PM

Anyone know if a rotor can be fixed from being warped/bent?

Raiyn

10-11-04 03:35 PM

Quote:

Originally Posted by free_pizza

Anyone know if a rotor can be fixed from being warped/bent?

Yes.

frozin

10-11-04 03:40 PM

Definitely, just use an adjustable wrench to carefully pull it straight. If it's a small warp, I wouldn't even worry about it...

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