Brake Shudder

[Mug Punter]

"KC" <kaye_see@yahoo.com.au> wrote in message
news:n0non0pjndkueltir20g265a08j305rhca@4ax.com...
> Hi,
>
> My TH Magna has slowly developed wheel shudder when braking, more
> noticeable at higher speeds.
>
> I've done 55,000km without any problems whatsoever - great car.
>
> Am I on the right track thinking the chances of the front disks
> requireing machining are good rather than a simple disk pad
> replacement?
>
> Just like to visit the machanic a little knowledgable :)
>
> Cheers,
> Kay

Yep. Machined, or replaced if they are not thick enough.

[John_H]

KC wrote:

>
>My TH Magna has slowly developed wheel shudder when braking, more
>noticeable at higher speeds.
>
>I've done 55,000km without any problems whatsoever - great car.
>
>Am I on the right track thinking the chances of the front disks
>requireing machining are good rather than a simple disk pad
>replacement?
>
>Just like to visit the machanic a little knowledgable :)

Firstly -- my views on the subject aren't mainstream and would no
doubt raise the ire of those who'd want to machine them.

I'd start by banning brake lathes, which destroy more rotors than
braking ever did but are a nice little earner to those who have 'em.

If you use the correct pads and bed them in properly from new (almost
no one ever does) your brakes aren't likely to develop shudder...
which is almost always due to pad material building up on the rotors.
Your mechanic however will almost certainly know better (he'll reckon
they've warped) and isn't likely to be interested if he doesn't get to
use his lathe.

FWIW I can almost always wear my own rotors down to minimum thickness,
without their developing even the slightest hint of shudder and still
have them within the manufacturer's spec for runout. It usually takes
three sets of pads, sometimes only two, to wear out a rotor.

If they really must be machined, find someone who grinds them, then go
out and bed your pads in properly.

Have a look at...
http://www.stoptech.com/whitepapers/warped_rotors_myth.htm

Your brake 'specialist' will no doubt be pissed if you tell him. Nor
should you ask him why brake lathes didn't appear on the scene until
disc brakes became mainstream.... In the ten years prior to that,
those who had 'em never felt the need to machine them.

So there, I probably haven't helped one bit. :))

--
John H

[Toby Ponsenby]

<| Mug Punter |> did write on 25Oct2004 at 12:16:10 PM
> "KC" <kaye_see@yahoo.com.au> wrote in message
> news:n0non0pjndkueltir20g265a08j305rhca@4ax.com...
> > Hi,
> >
> > My TH Magna has slowly developed wheel shudder when braking, more
> > noticeable at higher speeds.
> >
> > I've done 55,000km without any problems whatsoever - great car.
> >
> > Am I on the right track thinking the chances of the front disks
> > requireing machining are good rather than a simple disk pad
> > replacement?
> >
> > Just like to visit the machanic a little knowledgable :)
> >
> > Cheers,
> > Kay
>
> Yep. Machined, or replaced if they are not thick enough.

Make that
Yep - machined or replaced if *you* are thick enough.

At that distance travelled, I doubt the disks would be down to their (don't
sue us, we specified it on the disk) minimum thickness.


--
Toby
quidquid latine dictum
sit, altum viditur

[OzOne]

On Mon, 25 Oct 2004 10:01:57 +0800, KC <kaye_see@yahoo.com.au>
scribbled thusly:

>Hi,
>
>My TH Magna has slowly developed wheel shudder when braking, more
>noticeable at higher speeds.
>
>I've done 55,000km without any problems whatsoever - great car.
>
>Am I on the right track thinking the chances of the front disks
>requireing machining are good rather than a simple disk pad
>replacement?
>
>Just like to visit the machanic a little knowledgable :)
>
>Cheers,
>Kay

Yep, skim and it's probably due for pads anyway.
Chaepest and quickest way is to take it to a brake specialist.


Oz1...of the 3 twins.

I welcome you to crackerbox palace,We've been expecting you.