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-   -   Tools for straightening a disc? (https://www.bikeforums.net/mountain-biking/778809-tools-straightening-disc.html)

ESW116 10-31-11 01:06 PM

Tools for straightening a disc?
 
My front disc isn't perfectly true and it makes adjusting the front pad clearances a bit difficult. Already took it to a LBS and they didn't seem to do much to it. Wondering what the home options are. Brakes are Avid bb5's on my Specialized Hardrock.

ed 10-31-11 01:23 PM

http://i60.photobucket.com/albums/h2...ch-800x800.jpg

jezmellors 10-31-11 01:29 PM

I've done it using an adjustable spanner (wrench), the kind that has a knurled wheel to open or close the jaws. Adjust the jaws so that they are just slightly wider than the disc and gently bend the disc one way or the other, then spin the wheel to check. It is helpful to have the bike in a repair stand or hanging off the ground. Make sure the jaws are smooth and won't damage the disc. Be patient it takes time.

jezmellors 10-31-11 01:30 PM

Yep, that's the one.

lubes17319 10-31-11 01:34 PM

Or if you're as loaded with $$ as I am.........
http://www.blueskycycling.com/produc...e/37060_md.jpg

Scopes 10-31-11 02:00 PM

http://www.pinkbike.com/news/Tech-Tu...ning-2011.html

dminor 10-31-11 02:06 PM

http://www.restoredwoodshop.info/ima...a8-final-1.jpg

+

http://www.eastwood.com/media/catalog/product/p9862.jpg

ESW116 10-31-11 02:28 PM


Originally Posted by ed (Post 13435332)

lol I figured it would have to be something a little more specialized than that. Either way, sounds good. I've got one or two of those lying around.

ESW116 10-31-11 02:33 PM


Originally Posted by Scopes (Post 13435496)

Awesome link. Thanks!

ESW116 10-31-11 04:02 PM

Okay, I used the monkey wrench and it worked perfectly. I didn't want to risk any scratches so I actually taped some tissue paper to the inside edges of it. Disc is straight as an arrow now...which means I can finally run the pads closer. Feels good man.

noodle 11-03-11 12:33 PM

I use the same thing for changing tires... fingers (on the edge of the rotor- not touching the brake surfaces). Put thumb on center of wheel with fingers over edge of high spot on rotor and bend.


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