Re: Brake squeel.

[Yevgheny Khanin <ykhanin@iil.intel.com>]

	Seems to me I have never experienced this problem except, of
	course, for a certain period of time after the pad change. I
	always use Lucas pads if I'm not mistaken. I can be more specific
	is needed. They	indeed fit a number of car makes (there's a list 
	on the box, I think). Last time change was after about 19K miles
	(30K km). Seems to be fair.

	Yevgheny
	'70 notch 


On Mon, 1 Dec 1997, Steve Bradley wrote:

> 
> 
> Melissa & Jim wrote:
> 
> > On 30 Nov 97, Ginger D.&Peter P. wrote:
> >
> > >       Jim mentioned that cheap disk brake pads don't tend to squeel.  Where
> > > do I get cheap T3 pads (Repco I think)?  Does NAPA actually sell T3
> > > parts?
> >
> > Probably.  Our pads actually fit a number of cars, so all they have
> > to do is look up and find out which part of their stock we use.
> >
> 
> This note on squeeling disc brakes. A local auto repair radio talk show in
> Atlanta has a mechanic named Sam Memmolo on it. He says the reason disc brakes
> squeek is that the rotors have probably been turned using a directional cutting
 > tool (the kind on just about every brake lathe in mechanic shops).
> 
> These directional cutting marks cause the pad to "dance" on the surface of the
> rotor when pressure is applied, thus causing them to vibrate against the pad
> holders and make a noise. The cutting marks can also cause new pads to
> prematurely fail, depending on the type of pads used.
> 
> He says the original cut on the OEM rotors is done using a helical cutting tool (
> makes curved cutting marks across the face of the rotor instead of parallel to
> the direction of rotation of the wheel).
> 
> He comments that you can smooth down these cutting marks by mounting the rotor,
> spin it and sand it with 320 grit emery cloth, moving the paper back and forth
> from the hub to the outer rim of the rotor to remove the directional cutting
> marks of the brake lathe. He says the smoother the surface, the less the squeel.
> 
> Steve B.
> 
> 
> 
>