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Go Back   DCSportbikes.net > Sportbike Operation > Test and Tune

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  (#1)
Railing!
 
Grendel75's Avatar
 
Posts: 451
Join Date: September 29, 2002
Location: Manassas VA
May 27, 2004, 06:48 PM

I was cleaning my bike and putting it back together from the last few track days that I've done and noticed the brakes are making a whole lot of noise. They sound like they might be dragging pretty heavily.

So I: washed the rotors and sprayed some brake cleaner in the calipers.

Then, went for a ride and the noise continued. The brakes feel fine and no pulsing at the lever so I don't think the rotors are warped. It appears that I've still got plenty of material on the pads. So my next step is: Take out the pads, clean the pistons, and put it all back together.

I know you generate allot of dust at track days and their just probably dirty but, is their anything else I should be looking for?

Also, I've got EBC pads and is it possible that they make the surface of the rotors a little "rougher" and might generate more noise as a result?
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boxing twins
 
hayabusafiend's Avatar
 
Posts: 581
Join Date: April 6, 2003
Location: Northern California
May 27, 2004, 09:27 PM

1) EBC HH pads have alot of drag.

2) your caliper pistons might not be retracting completely. Unbolt the calipers, and clean the pistons and calipers with a clean rag and brake cleaner. Don't slide the pistons out as it's unnecessary and you might damage the O-ring or introduce air. If you get air in the brake system, you'll have to bleed it.

3) flush your brake fluid if it is any darker than tan, or is murky

4) doublecheck that it's not your front wheel bearings providing the extra drag (wheelies beat the crap out of wheel bearings). Spin the front wheel without the calipers attached.

edit: typo


-- Chris
BMW R1100s
(previous rides: '82 KTM250, '95 CBR600F3, '98 Buell S3T, 2000 Hayabusa, 2008 R1200R)

"Any sufficiently advanced technology is indistinguishable from magic." -- Arthur C. Clarke
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  (#3)
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Triple X's Avatar
 
Posts: 8,501
Join Date: September 29, 2002
Location: Stephens City, VA
May 27, 2004, 09:36 PM

It's just your pads.
When I put EBC's on mine the drag and noise went up.
Power is awesome but I won't be getting another set.
Like I need more drag...


Steve
2015 Yamaha R1
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  (#4)
Railing!
 
Grendel75's Avatar
 
Posts: 451
Join Date: September 29, 2002
Location: Manassas VA
May 27, 2004, 11:30 PM

Quote:
Originally Posted by SteveZX9
Like I need more drag...
Just so we're clear your talking about brakes...right?


Tomorrow I'll post up my findings after I clean my calipers. I'm sure their dirty or it's the EBC's. However, I've had these pads on for a while and it just seems strange that only now they'ed get so noisey.
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Posts: 2,689
Join Date: October 8, 2002
Location: Charles Town
May 28, 2004, 12:06 PM

Definitely the pads. But you just can't beat the stopping power and the turbine like whine when you're braking. I charge into corners just to hear it. After hard braking they'll drag a bit on the front, but aside from the noise I don't notice any ill effects.
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