Nitto m12 rack install now brake problems...

[murphyjrfk]

What did I do?

I went to put my the rack on my Atlantis. Well I wasn't paying attention and tightened thebolt to replace the brake studs I tightened and realized and loosened and corrected. Well now the brake has zero spring tension and I could barely get the damn thing off the brake stud.

What did I do?

[Ryan Ray]

I'm guessing the spring is no longer in the little eyelet on your canto stud.

- Ryan

[murphyjrfk]

That's what I thought I checked twice. It's like all o the sudden the brake is too small for the post it won't pivot and I have enough grease on there to last a lifetime!

[René Sterental]

What brakes do you have?

On Sunday, July 22, 2012, murphyjrfk wrote:

That's what I thought I checked twice. It's like all o the sudden the brake is too small for the post it won't pivot and I have enough grease on there to last a lifetime!

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[Joe Broach]

Probably overtightened and "mushroomed" the stud slightly:

"Cantilever brake mounting bolts (front especially.)
If these are overtightened, they can "mushroom" the ends of the
cantilever bosses, causing the brake to bind up." -Sheldon Brown

It's pretty common. Likely you can get the diameter back to normal by
wrapping the canti post with sandpaper and taking off the bulge. Keep
checking fit until you're there. This after you're sure it's nothing
weird with the brake arm itself. Check by test fitting the matching
arm from the rear of the bike.

Best,
joe broach
portland, or

[murphyjrfk]

Thanks. For the info I'll look into that. Oops. Oh and I have the tektro cr 720s love em or hate em- for me it's both.

[Greg Smith]

I had this problem on my XO-1. For me the rack arm thru which the brake bolt runs and and the stud were not aligned resulting in brake drag. I had recently installed Paul brakes and was baffled.
As soon as I trued up the alignment of these two pieces, the stud fortunately returned to it's original position and I haven't had a problem since.
Hope this works for you,
Greg

On Jul 22, 2012, at 8:09 PM, murphyjrfk <murph...@gmail.com> wrote:

> That's what I thought I checked twice. It's like all o the sudden the brake is too small for the post it won't pivot and I have enough grease on there to last a lifetime!
>