Brake noise

[Pierre]
 > I have a 2002 zx12r which I changed the front pads on this year. Ever
since
 > then there is a whistling noise from the front brakes. The only thing
 > different with the new pads is the fact that there is no wear grove on
them.


That cuold be a harder synter-metal alloy pad. In this case the sound is
normal.


G00fy<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Brake noise 

Thanks for the reply. I guess I can live with it as long as the bike keeps
stopping when I want.


"G00fy" <g00fy DeleteThis @axelero.hu> wrote in message
news:bvgj7g$egl$1@namru.matavnet.hu...
 > [Pierre]
  > > I have a 2002 zx12r which I changed the front pads on this year. Ever
 > since
  > > then there is a whistling noise from the front brakes. The only thing
  > > different with the new pads is the fact that there is no wear grove on
 > them.
 >
 >
 > That cuold be a harder synter-metal alloy pad. In this case the sound is
 > normal.
 >
 >
 > G00fy
 >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Brake noise 

 >From: "G00fy" g00fy RemoveThis @axelero.hu

 >That cuold be a harder synter-metal alloy pad. In this case the sound is
normal.

Hey, G00fy! Maybe you could explain to me what the difference is between Mickey
Mouse's friend Goofy and his dog, Pluto...

Like, why does Goofy wear clothes, but Pluto has to run around naked?<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Brake noise 

 >From: "Peter" pierrevachon.TakeThisOut@rogers.com

 >I guess I can live with it as long as the bike keeps stopping when I want.

What, are you independently wealthy, and can afford to pay out $350 for a set
of new disk brake rotors in about
10K miles?

If your motorcycle was not equipped with sintered-metal brake pads, the
noise---and the excessive disk wear---cannot be described as "normal"...

Check out some of the brake pad manufacturers' web sites or the mail order
catalogues to find out which brake pad compounds are acceptable for replacement
of original equipment brake pads on the original equipment brake disks...

In the late 1960's and early 1970's, when choppers were the fad, owners would
remove the front brakes, for the "clean" appearance...

Then they would only have rear brakes to do all the stopping. One guy told me
that he installed a set of custom sintered-metal brake shoes on the back of his
chopper...

A few thousand miles later, he needed a new brake drum...

I tried sintered shoes on one of my street bikes, and found that the drum wore
rapidly, also...<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Brake noise 

There is no excessive wear. I think it's just the sound of the air escaping
through the disk holes as there is no groove in the pad for it to go now.
Annoying as hell. Sounds like a supercharger.


"Kaybearjr" <kaybearjr.TakeThisOut@aol.comical> wrote in message
news:20040131161936.24764.00001252@mb-m16.aol.com...
  > >From: "Peter" pierrevachon.TakeThisOut@rogers.com
 >
  > >I guess I can live with it as long as the bike keeps stopping when I
want.
 >
 > What, are you independently wealthy, and can afford to pay out $350 for a
set
 > of new disk brake rotors in about
 > 10K miles?
 >
 > If your motorcycle was not equipped with sintered-metal brake pads, the
 > noise---and the excessive disk wear---cannot be described as "normal"...
 >
 > Check out some of the brake pad manufacturers' web sites or the mail order
 > catalogues to find out which brake pad compounds are acceptable for
replacement
 > of original equipment brake pads on the original equipment brake disks...
 >
 > In the late 1960's and early 1970's, when choppers were the fad, owners
would
 > remove the front brakes, for the "clean" appearance...
 >
 > Then they would only have rear brakes to do all the stopping. One guy told
me
 > that he installed a set of custom sintered-metal brake shoes on the back
of his
 > chopper...
 >
 > A few thousand miles later, he needed a new brake drum...
 >
 > I tried sintered shoes on one of my street bikes, and found that the drum
wore
 > rapidly, also...
 >
 >
 >
 >
 >
 >
 >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Brake noise 

On 31 Jan 2004 21:19:36 GMT, kaybearjr.DeleteThis@aol.comical (Kaybearjr) wrote:

  >>From: "Peter" pierrevachon.DeleteThis@rogers.com
 >
  >>I guess I can live with it as long as the bike keeps stopping when I want.
 >
 >What, are you independently wealthy, and can afford to pay out $350 for a set
 >of new disk brake rotors in about
 >10K miles?
 >
 >If your motorcycle was not equipped with sintered-metal brake pads, the
 >noise---and the excessive disk wear---cannot be described as "normal"...
 >
 >I tried sintered shoes on one of my street bikes, and found that the drum wore
 >rapidly, also...

"If" being the key word. More research needed by the original poster,
I'd say.

Many bikes these days do come with sintered pads. I own two. My
Aprilia had sintered OEM, as well. If the rotors can handle it, they
work marvelously well. I've measured the Blackbird discs for wear a
couple times the past 15K miles, and note nothing unusual: they're
in-spec, per the manual. First set of pads replaced c. 11K miles with
EBC HH (sintered), second set at about 30K miles. The OEMs were
sintered, also.

(As an aside, seems I recall a Ferodo thread here or elsewhere a
couple years back warning against using sintered pads with cast-iron
(aftermarket) rotors? Another topic.)

Before that, I dunno. I recently resurrected some onboard video shot
behind the canopy of my Gixxer 750, taken in 1996, complete with
audio. I noted a distinct medium-pitch 'whine' when hard on the
brakes (6-piston Tokicos, 320mm SS rotors). I always used EBC Green
compound on those brakes, an organic pad if memory serves. Those pads
were the best game in town IMHO about ten years ago. Times change.

Point is, "who knows why" pads resonate. I'd be more concerned about
dragging or correctly alignment of the pads in the calipers.

'-----------------------------------------------------
' Daniel Bannon
' NW WA State, U.S.A.
' 2003 ZX636B Hercusaki, 1999 CBR1100XX
'-----------------------------------------------------<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Brake noise