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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Troubleshooting (Poor Starting/Running/Handling/Ride Issues) » Archive through August 12, 2010 » Not smooth front brake « Previous Next »

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Turbooster
Posted on Wednesday, August 11, 2010 - 03:15 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The front brake on my Ulysses is not smooth. You might say it pulses or even grabs. It that normal? Is it my technique? How can it be improved? Light pressure will slow fairly smoothly, but as I increase pressure it starts to pulse or even feels like bucking. I'd like to correct it if possible.
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Ulynut
Posted on Wednesday, August 11, 2010 - 04:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

A lot of us have had the same problem.

Some say their rotor was warped, others say it's the brake pads leaving a residue on the rotor.

I sanded my rotor, and it was good again. For about 300 miles. Then the problem came back. Sanded again, this time better. Good for 300 miles. Then I sanded and changed to Lyndall brake pads. Good for about 1000 miles, and symptoms returned. Finally bought a new rotor and EBC pads and have been pulse free for 18,000 miles now.
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Froggy
Posted on Wednesday, August 11, 2010 - 05:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If you do a search on here for "Brake Pulsing" you will get a ton of threads on it. The two main factors that cause it are brake pad deposits on the rotor, and brake dust clogging up the float springs.

If you are a light braker, you will cause the pads to heat up as you slowly drag the brakes and leave excessive amounts of dust which gets into the springs. Also if you hold the front brake down while stopped, the pads can leave a layer of the brake pad on the surface of the rotor.

You may be able to clean off the rotor and springs, then do multiple high speed fast stops (70mph to 10mph, don't come to a complete stop). Also, use the rear brake instead of the front to hold the bike when stopped. : )
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Reepicheep
Posted on Wednesday, August 11, 2010 - 09:08 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

6mm rotor from Erik Buell Racing and a good set of pads (call Al at American Sport Bike for guidance) and it'll be wonderful again.
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Turbooster
Posted on Thursday, August 12, 2010 - 11:45 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks for the info. I can seen some upgrading being done in the garage over winter (or sooner).
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