RE: [ST] brake shuddering

[peter.chittum@xxxxxxxxxxxx]

I encountered this problem on my '01 ST at around 12k miles. My mechanic
checked for warped rotors and I didn't have any. I've been told a couple of
other things that can cause this:
1. Loose steering head.
2. Full floating rotors have become wedged and aren't floating anymore.
3. Poorly balanced wheel. 

In my case, they found the steering head was loose and had too much play,
and they tightened it. It seems to have improved under all but the hardest
breaking. 

Peter Chittum - '01 BRG Sprint ST
San Jose, CA, USA


> -----Original Message-----
> From: David W. Funk [mailto:dwf@xxxxxxxxx]
> Sent: May 19, 2003 7:23 AM
> To: collett_mc; Sprint ST list
> Subject: Re: [ST] brake shuddering
> 
> 
> On Fri, 16 May 2003 20:23:04 -0400, collett_mc wrote:
> 
> >   Anyway, I'm noticing a shuddering under hard braking.  I 
> can't tell if
> >it's warping rotors or something else (like brake pads 
> vibrating).  Has
> >anyone else had this type of problem?  I've got a 2001 ST w/ 
> 13k miles.  I
> >would say I use my bike in a sporting manner (the throttle & 
> brakes get a
> >workout when I'm on my favorite roads) but I'm not hard on 
> it.  It certainly
> >gets treated better than the sportbikes I've had in the past.
> >    Along those lines, has anyone replaced their rotors / pads?  Any
> >recommendations?
> 
> A brake shudder could be wrapped rotors. It is easy to test, 
> measure the 
> rotors with a dial indicator and see if they are in spec.
> I don't think the shudder can be caused by the pads. But it 
> is possible that 
> you have a surface contaminate on part of the rotors. Try 
> cleaning the rotors 
> with spray brake cleaner, or something like that. Of coarse 
> you might as well 
> check that the pads are not too thin.
> 
> David W. Funk
> '00 Triumph Sprint ST
> Pleasanton, CA
> 
> 
> 
> 
>      *   *   *   *   *   *   *   *   *   *   *   *   *   *   
> *   *   *   *   *
>       The ST/RS Mailing list is sponsored by Jack Lilley Ltd.
>           http://www.TriumphNet.com/st/lilley for more info
>    http://www.TriumphNet.com/st for ST, RS and Mailing List info
> 

     *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *
      The ST/RS Mailing list is sponsored by Jack Lilley Ltd.
          http://www.TriumphNet.com/st/lilley for more info
   http://www.TriumphNet.com/st for ST, RS and Mailing List info

=-=-=-= Next Message =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=