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Buell Forum » 1125R Superbike Board » Archive through June 14, 2012 » Brake rotor fix?? « Previous Next »

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Georgehitch17
Posted on Tuesday, June 05, 2012 - 02:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hey guys I recently put ferodo XRAC pads on my 25R I noticed pulsating at first and its now been 2k miles and shes really shakes when I apply the brakes I see the spots on the rotor is there a way to fix this!?
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Syonyk
Posted on Tuesday, June 05, 2012 - 02:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I've had good luck cleaning my rotors with a brillo pad & brake cleaner. Wear gloves!

You can also buy brake rotor hones to help strip all the crap off & give them a "like new" finish.
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Georgehitch17
Posted on Tuesday, June 05, 2012 - 02:42 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

yeah all the deposits are shaking the fairing like crazy under heavy braking!
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99buellx1
Posted on Tuesday, June 05, 2012 - 03:33 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Also ensure that each mounting point of the brake to the rim is moving freely.
These can get gunked up and cause issues.
Spray behind the rotor with some brake cleaner, helps a little.
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Thefleshrocket
Posted on Wednesday, June 06, 2012 - 03:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

You should be able to remove the deposits from the rotor by repeated hard braking. See here for a recommended procedure:

http://stoptech.com/technical-support/technical-wh ite-papers/uneven-pad-deposit-removal

In my experience, ceramic pads are the worst (and generally only) offenders when it comes to leaving deposits on rotors. I'm guessing that the Ferodo pads aren't ceramic, but I would strongly recommend changing to a different brake pad compound. I'm a big fan of the Dunlopad SDP993 pads, which I've got on my 1125R. Several thousand miles, no deposits, and great stopping power.

http://www.ebay.com/itm/DP-BRAKES-HH-BRAKE-PADS-SD P993HH-BUELL-1125-CR-R-08-10-/230792355890?pt=Moto rcycles_Parts_Accessories&hash=item35bc4be032&vxp= mtr

(Message edited by thefleshrocket on June 06, 2012)
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Cycledoc59
Posted on Wednesday, June 06, 2012 - 05:52 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Syonyk nailed it:

Brake rotor surfaces are quite rough
under a magnifying glass. Many different substances
can become imbedded and create the "hard spots" that cause jerky
braking. A lot of brake rotors have been
replaced that just needed cleaning.
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Rpm4x4
Posted on Wednesday, June 06, 2012 - 06:22 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

That rotor looks aweful purple to me. Id lift it up, spin the wheel, and ensure the caliper isnt binding, just to be sure.
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Sprintst
Posted on Thursday, June 07, 2012 - 11:53 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

American Sport Bike has a tool for it

http://www.americansportbike.com/shoponline/ccp0-p rodshow/16055.html




quote:

16055 - Brake Rotor Hone

Utilizing patented "flex-hone" technology, this new tool produces the factory style, oem cross-hatch finish, perfect for maintaining your rotors for maximum performance! Removes old friction material deposition layers quickly and easily, allows new pads to quickly bed-in properly for maximum performance potential.
Price: $41.95


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Cycledoc59
Posted on Friday, June 08, 2012 - 09:01 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Brake rotor hones have been around
forever, and can be found at most
auto stores, or even Sears for less
than $30. All of them are "flex-hones"...
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Jdugger
Posted on Friday, June 08, 2012 - 11:01 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

To me, that rotor looks completely unused, and a racing brake pad is only going to make the situation much worse.

After you clean the rotor buy a soft, street pad designed for non-aggressive riding.
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Georgehitch17
Posted on Friday, June 08, 2012 - 01:15 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

@jdugger alot of my riding is pretty aggressive not track aggressive but more than "street use"
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Jdugger
Posted on Friday, June 08, 2012 - 11:23 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

You aren't using the brake hard enough for a racing pad...
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Redcrrider
Posted on Saturday, June 09, 2012 - 08:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

It looks like you have hot spots, which cause the metal to harden and the pad not to grab. Hot spots on a flywheel cause horrible clutch chatter and I assume the same with brake rotors.

Do you have a larger picture of your rotor?
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Kruizen
Posted on Monday, June 11, 2012 - 09:18 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I had the same issue when I replaced my pads. Rebuilding the caliper solved the dragging issue.

Bought the kit from American Sport Bike for $68 with pistons. EB R has the kit for cheaper without the pistons.
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