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Buell Forum » Old School Buell » Archive through September 07, 2012 » Front Brake "Pulsation", no, that's not the word... « Previous Next »

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Chauly
Posted on Wednesday, August 29, 2012 - 02:23 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

OK, Lafayette,
Have you ever experienced a slip-grip-slip-grip braking from the front rotor?
Not much runout on the disc at all, and there is no visible surface contamination or appearance difference that I can see.
Resurface? Replace? IIRC, the disc was replaced under recall years ago... CRS moment...
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Buell_bert
Posted on Wednesday, August 29, 2012 - 06:15 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Runout is one thing but also mic the thickness at different points. HARD SPOTS? Discoloration on the rotor? Also remove, clean and reinstall on a clean mounting surface and check for good bearings as that may be another situation. Good luck.
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Buellistic
Posted on Wednesday, August 29, 2012 - 06:53 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Chauly:

PM me and "i" will send you some HELP "INFO" ...

1st question is have you had your bike to a H-D dealer just before you posted ???
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Chauly
Posted on Wednesday, August 29, 2012 - 10:49 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

1st question is have you had your bike to a H-D dealer just before you posted ???

Hell, no!
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Littlebuggles
Posted on Thursday, August 30, 2012 - 04:22 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Stock formula pads can leave a residue that will give a pulsing feel, or make it feel as if maybe your rotor is warped.

Switching to the Lyndall gold pads fixed that. They cleaned off the residue (which I couldn't really see, but sure could feel) and they don't squeal like the stock pads do.
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Foximus
Posted on Thursday, August 30, 2012 - 10:06 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

you should be resurfacing your rotors with sandpaper between pads.... Don't rely on new pads to grind off the old layers. Bad habits fellas...
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01x1buell
Posted on Thursday, August 30, 2012 - 07:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

what grit of sand paper ???
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Foximus
Posted on Thursday, August 30, 2012 - 07:52 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Anything below 200 would be fine. I use a rotary polisher with coarse fiber bits.
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Ratbuell
Posted on Friday, August 31, 2012 - 07:33 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

also don't hold the bike in place at lights with the front brake. Hot pads clamped to the rotor = grabby spots / residue. Use the front brake to stop, rear brake to hold.

Word of warning on Lyndalls - I ran them on my Uly for a while, and they don't fade progressively. One corner they're there...next corner, NOTHING. There've been a few guys in Uly-land who've experienced it. You have to work them hard to make it happen, but when it happens....pucker up!
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