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Buell Forum » XBoard » Archive through June 09, 2011 » How long did your front rotor last ? « Previous Next »

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Rkutzner
Posted on Tuesday, May 24, 2011 - 02:15 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

My brakes are pulsing at 10000 miles. In the air on a jack when I spin the front tire there are grabby spots. Tried cleaning the rotor to no avail. I really don't want to buy a new rotor every 10000 miles, is this a common problem ?
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Greg_e
Posted on Tuesday, May 24, 2011 - 02:22 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Did you check run out on the wheel? Tape a point to each fork to use as a reference and look to see if there is a lot of run out in the wheel, then move the pointer to the rotor and see which one is the damaged part.
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Rkutzner
Posted on Tuesday, May 24, 2011 - 02:44 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I dont understand what you mean. Its acting just like a warped car rotor. When not braking its handling great. pulses lightly on braking. I just bought pads so you can see Im pretty easy on the brakes.
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Reepicheep
Posted on Tuesday, May 24, 2011 - 03:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Changing pad compounds can help quite a bit in many cases, and switching to an Erik Buell Racing 6mm rotor solves the problem.
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Rkutzner
Posted on Tuesday, May 24, 2011 - 03:09 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I take it its thicker? I didnt realize some of the 1125 stuff fit the xbs! Will have 2 look into that.

Can the stock rotor be turned?
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Hughlysses
Posted on Tuesday, May 24, 2011 - 03:36 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If you replace the disk, the Erik Buell Racing disk mounting kit is also a must-have.
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Rkutzner
Posted on Tuesday, May 24, 2011 - 03:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The site is down for inventory for the rest of May, anyone remember how much that one is ? American Sport Bike has a thicker one for $235...ouch. It does come with all the mounting hardware.
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Froggy
Posted on Tuesday, May 24, 2011 - 04:36 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

http://www.EBRacing.com/shop/product6.html

http://www.EBRacing.com/shop/product27.html


The pulsing is a bit of a common problem, and most of the time is due to the pads leaving deposits on the rotor and mounting hardware. Depending on the severity it can be cleaned off. Using the rear brake to hold your bike at stops instead of the front can prevent this from happening again. I have over 100,000 miles on multiple ZTL Buells, had an issue early on with my 06 Uly, changed my habit, it went away and I've never felt pulsing since. Most of my bikes are running original rotors and pads.
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Rkutzner
Posted on Tuesday, May 24, 2011 - 07:04 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

That's a great idea. I've tried to clean them with brake cleaner and a green pad which helped a little. Maybe an abrasive gasket pad (takes gasket off of heads)in those spots might help but the rotor isn't exactly smooth anyways so a new one is in order. I think the Erik Buell Racing 6mm with new pads and your idea about using the rear brake will be the solution. Heck, I need a new front tire anyways.......
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Hemicbx
Posted on Tuesday, May 24, 2011 - 08:53 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Excellent article by Carroll Smith here on pulsing brakes, the causes, the myths, and the cures.

http://www.stoptech.com/tech_info/wp_warped_braked isk.shtml

(Message edited by hemicbx on May 24, 2011)
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Rkutzner
Posted on Wednesday, May 25, 2011 - 06:17 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

That clears it up some. Any tips for removing the front tire off the bike ? I'll go by the shop manual, of course, but sometimes somebody has a useful tip.....
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D_adams
Posted on Wednesday, May 25, 2011 - 08:29 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

http://www.badweatherbikers.com/buell/messages/290 431/633598.html?1306164707

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Rkutzner
Posted on Wednesday, May 25, 2011 - 06:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Or a useful video. I hadn't even thought of rotating the caliper.
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Froggy
Posted on Wednesday, May 25, 2011 - 07:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If your bike has the 6 pot ZTL1 caliper, it takes less effort to remove the wheel than the 8 pot ZTL2 like shown.
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Cycleaddict
Posted on Wednesday, May 25, 2011 - 11:24 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

that was a clever video .... but, remove 4 bolts for the fender or 2 bolts for the caliper , i think i'll go with the 2 bolts .
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Froggy
Posted on Wednesday, May 25, 2011 - 11:27 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

You never have removed a ZTL2 caliper then ; )
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Cycleaddict
Posted on Thursday, May 26, 2011 - 12:03 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

my bad , 6 pot ZTL1 experience only here .
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Rkutzner
Posted on Thursday, May 26, 2011 - 04:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

My TT dont got no fender!
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Natexlh1000
Posted on Friday, May 27, 2011 - 07:58 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I just take the fender bolts of the right leg on my XB12X.

It's A LOT easier than my X1 front wheel.
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Skully
Posted on Saturday, May 28, 2011 - 10:09 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I have 55,000 on my 2003 XB9S with the original front brake rotor. The bike has seen several track days and races in the CMRA. Still no pulsing.

Keith

PS Thanks for the video Dean!

(Message edited by skully on May 28, 2011)
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Terrys1980
Posted on Saturday, May 28, 2011 - 10:51 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

As long as you stay away from organic pads you shouldn't get any pulsing in the front brake system.
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Nillaice
Posted on Monday, May 30, 2011 - 08:23 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

i'm with keith on this one. rotors shouldn't be a 'wear' item like tires or pads are.
now .... there are cases of abuse/neglect, but it should last until the pads wear on the rotor to the point it has reached it's minumum thickness of 0.18 inches/4.5 mm
someone wanna back me up on that minimum thickness?
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Nillaice
Posted on Monday, May 30, 2011 - 08:24 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

for refernce; new is 5mm, and the thicker one is 6mm
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Froggy
Posted on Monday, May 30, 2011 - 10:19 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Service manual says 4.5MM minimum.
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Rkutzner
Posted on Monday, May 30, 2011 - 12:08 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Obviously there's a difference between 'shouldn't' and 'can't'. From what I'm reading proper break in and use will dictate your experience. I will change both my break in and use and hopefully be in 'your camp' from here on out !
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