Mike G
10-25-2004, 05:09 PM
"Scott M" <smorris_12@delete_this.yahoo.com> wrote in message
news:416AAA1C.F68244AA@delete_this.yahoo.com...
>
> Conventional wisdom says, "when you replace your disks, put in new pads
> too" and goes on to say that this is to stop a pad that's been shaped to
> one disk having poor contact with a new disk.
>
> Nowadays, with pads that are harder than the disc, can (or indeed,
> should) this be reversed?
>
> I took a shufti at 'er indoor's Escort (97, 50k, all original parts) and
> the pads are still very meaty and look to have little wear on them while
> the disk is getting near its limit (20mm down to about 18.5 - min
> allowed 18mm.) The disks will get replaced soon but I'm trying to see
> any point in replacing the pads as, if they're that hard, they are going
> to "shape" a new disk to their wear pattern in the same way that the
> hard disks of yesteryear shaped softer pads, no?
>
> Any comments (apart from the safety lobby and the penny pinchers
> association, please)?
I must come into the penny pincher category because more than once I've used
old pads on new discs if the pads were relatively unworn.
Not an option available to many, but I ground the pads flat on a surface
grinder before fitting.
The same result could probably be obtained by flattening the friction
surface by hand on a sheet of course emery cloth. Making sure the pads
finished up reasonably parallel.
No asbestos in modern pads so it's safe from that POV but probably just as
well to use a face mask to avoid breathing the dust.
Mike.
news:416AAA1C.F68244AA@delete_this.yahoo.com...
>
> Conventional wisdom says, "when you replace your disks, put in new pads
> too" and goes on to say that this is to stop a pad that's been shaped to
> one disk having poor contact with a new disk.
>
> Nowadays, with pads that are harder than the disc, can (or indeed,
> should) this be reversed?
>
> I took a shufti at 'er indoor's Escort (97, 50k, all original parts) and
> the pads are still very meaty and look to have little wear on them while
> the disk is getting near its limit (20mm down to about 18.5 - min
> allowed 18mm.) The disks will get replaced soon but I'm trying to see
> any point in replacing the pads as, if they're that hard, they are going
> to "shape" a new disk to their wear pattern in the same way that the
> hard disks of yesteryear shaped softer pads, no?
>
> Any comments (apart from the safety lobby and the penny pinchers
> association, please)?
I must come into the penny pincher category because more than once I've used
old pads on new discs if the pads were relatively unworn.
Not an option available to many, but I ground the pads flat on a surface
grinder before fitting.
The same result could probably be obtained by flattening the friction
surface by hand on a sheet of course emery cloth. Making sure the pads
finished up reasonably parallel.
No asbestos in modern pads so it's safe from that POV but probably just as
well to use a face mask to avoid breathing the dust.
Mike.