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Old 06-13-2009, 03:40 PM   #21
bumblebee
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Quote:
Originally Posted by gsxrjai View Post
When I brake it "chatters" at speed. I've lived with it for awhile I can put it off for a month I guess. April how are the EBC? On ebay they are new 140.00-190.00. The Galfer were about 400-600.
When you say "at speed" are you saying, for example, that you have chatter slowing down coming off the freeway or do you mean braking hard from 150mph into turn 1 at TWS (Texas World Speedway)?
The reason I ask is because my track bike developed this chatter under hard braking, not even necessarily from high speed. Many people suggested warped rotors but there was no pulse at the lever and when spinning the wheel there was no drag on the pads.
After completely losing confidence in my brakes, my ol' pal Radar suggested suspension adjustments. It turns out he was right.
If you have dialed in too much rebound damping, the suspension "packs". That means that under hard braking the suspension can't rebound fast enough, and very quickly it becomes virtually locked.
Then as the tire runs over surface irregularities it bounces and skips causing the chatter.
Sorry if you already know/understand this but I'm just trying to share something I learned. If you have questions I can try to help, but I'm no suspension guru. LMK if I can help.
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Old 06-13-2009, 04:17 PM   #22
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^^ I can spin the wheel on the front stand and you can hear the rotor hit the pad on the right side. the left rotor is ok. I havent done a track day yet working on getting the bike up to par. At 60mph I can grab the front brake and get a chatter/viberation through my arms. It only happen when I brake hard. I can gradulaly(sp) pull the lever in its not as bad
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Old 06-13-2009, 04:21 PM   #23
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Quote:
Originally Posted by Mr Richards View Post
Most new bikes come stock with full floating rotors. That "washer" being loose is normal.

I would look into how bad EBC rotors chew up pads. My GF has EBC wave rotors on her bike and has went through several sets of pads.

The wave rotors offer less braking surface and do not perform as well as normal high performance rotors like the Brembo discs. Patrick can offer some insight on this. The wave rotor design is supposed to cool and not warp, but that is not always the case.
Thats good info to have... I guess Im going to need to take your advise and make it down to Motorcycles Unlimited
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