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front brake pulse

Started by wbeck257, December 02, 2008, 04:27:23 PM

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wbeck257

#15
December 04, 2008, 05:53:41 PM
Ah okay, that is where I got confused.
I'd go clean them now -- but my friends used up all my brake cleaner setting shi... cleaning stuff... yeah.

I tried scotchbrite pads -- but probably need brake cleaner too.
Also the ground it cold and wet, and I already tucked the front on the peddle bike today.
2006 Ducati S2R1000, 1974 Honda MT125, 1974 Penton Jackpiner 175, 1972 Yamaha R5

MAXdB

#16
February 19, 2009, 11:10:18 PM
I've been experiencing the same thing but only at very low speeds, typically when I approach a stop light/stop sign. I must say that it is very annoying because it makes me feel like a newbie that doesn't know how to modulate a front brake steadily.. Are warped discs visible to the naked eye or is it something that is felt rather than seen just by spinning on a stand? Some help would be greatly appreciated.

Howie

#17
February 20, 2009, 03:59:05 AM
Since the blades move on the carrier runout can't be measured with the rotor assembled.  Follow the tips above, in particular, that the blades move on the carriers.  If you feel brave and have good aim with a hammer ask Norm about his $0 full floater mod. 

♣ McKraut ♣

#18
February 20, 2009, 05:07:40 AM
Quote from: howie on February 20, 2009, 03:59:05 AM
Since the blades move on the carrier runout can't be measured with the rotor assembled.  Follow the tips above, in particular, that the blades move on the carriers.  If you feel brave and have good aim with a hammer ask Norm about his $0 full floater mod. 

i tried that once...or started to, rather...but gave up after about 10 minutes banging on one button with no progress, and ringing ears because i decided to do it in my loft    :-\
2001 M600 Dark  2005 S2R Dark  2001 M750  1996 900 SS/SP  2005 S4R
-  Dallas, TX

ducpainter

#19
February 20, 2009, 05:17:52 AM
I do it to all my bikes that have stock rotors.
"Once you accept that a child on the autistic spectrum experiences the world in
a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent.”


♣ McKraut ♣

#20
February 20, 2009, 05:22:42 AM
maybe i just need.... a bigger hammer.
2001 M600 Dark  2005 S2R Dark  2001 M750  1996 900 SS/SP  2005 S4R
-  Dallas, TX

ducpainter

#21
February 20, 2009, 05:27:18 AM
Quote from: ♣ McKraut ♣ on February 20, 2009, 05:22:42 AM
maybe i just need.... a bigger hammer.
You actually need to hit them pretty hard.
"Once you accept that a child on the autistic spectrum experiences the world in
a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent.”


♣ McKraut ♣

#22
February 20, 2009, 05:59:26 AM
you may have inspired me to break out that socket and hammer and block of wood once again...
2001 M600 Dark  2005 S2R Dark  2001 M750  1996 900 SS/SP  2005 S4R
-  Dallas, TX

ducpainter

#23
February 20, 2009, 06:25:57 AM
Quote from: ♣ McKraut ♣ on February 20, 2009, 05:59:26 AM
you may have inspired me to break out that socket and hammer and block of wood once again...
Where are you using the block of wood?
"Once you accept that a child on the autistic spectrum experiences the world in
a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent.”


♣ McKraut ♣

#24
February 20, 2009, 07:49:01 AM
i had put the rotor on the block of wood... "outside" facing down, so that the correct socket size (can't remember offhand) fit perfect on the inside to bash the washer flat from the inside, in a nutshell.  does that sound right?

and so that this isn't a threadjack....does a full floating rotor offer better benefits as far as even wear compared to semi-float?  it does, right?
2001 M600 Dark  2005 S2R Dark  2001 M750  1996 900 SS/SP  2005 S4R
-  Dallas, TX

ScottRNelson

#25
February 20, 2009, 08:13:50 AM
More than you ever wanted to know about eliminating brake pulsing:

http://www.stoptech.com/tech_info/wp_warped_brakedisk.shtml
Scott R. Nelson, 2001 XR650L, 2020 KTM 790 Adv R, Meridian, ID

The Architect

#26
February 20, 2009, 08:42:40 AM
Quote from: ScottRNelson on February 20, 2009, 08:13:50 AM
More than you ever wanted to know about eliminating brake pulsing:

http://www.stoptech.com/tech_info/wp_warped_brakedisk.shtml

Both ScottRNelson's and ducpainter's links have some great information!

From the sounds of it, I had the same problem on my monster, pulsing.  Disks weren't warped.  Once I bed the pads in it all went away and the front brakes seemed to have more bite.

We even had the pulsing on my wife's car.  Normally I would have replaced the rotors.  This time I bed the brakes in and the pulsing went away. 

MAXdB

#27
February 20, 2009, 03:04:02 PM
My s4rs rotors' buttons do not move at all... is there a how-to for this "modification" to full floating

ducpainter

#29
February 20, 2009, 05:22:14 PM
Quote from: ♣ McKraut ♣ on February 20, 2009, 07:49:01 AM
i had put the rotor on the block of wood... "outside" facing down, so that the correct socket size (can't remember offhand) fit perfect on the inside to bash the washer flat from the inside, in a nutshell.  does that sound right?

and so that this isn't a threadjack....does a full floating rotor offer better benefits as far as even wear compared to semi-float?  it does, right?
That's not right.

You need a 19mm socket around the outside of the large diameter of the button supporting both the carrier and the blade. Then you hit the button on the back side hard. That will flatten the wave washer and free the button.
Quote from: ScottRNelson on February 20, 2009, 08:13:50 AM
More than you ever wanted to know about eliminating brake pulsing:

http://www.stoptech.com/tech_info/wp_warped_brakedisk.shtml
..and Scott is absolutely correct. I can't remember how many times I've posted the same link. Correct pad bedding is the single most important aspect of good brake performance.

I don't float rotors to eliminate pulsing, although it will help to mask minor problems. I do it because I think it also improves brake feel.
"Once you accept that a child on the autistic spectrum experiences the world in
a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent.”


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