Do sintered Pads go "Off" ? - SV650.org

DavieSV · 06-01-14, 03:02 PM

My front discs are rusty as a rusty thing.
A quick ride soon cleans them off, but they rust again within hours.
If I leave the bike for a few days after riding in the rain, the pads stick to the disc and need a good shove to break them off.

Now I'm under the belief that sintered pads transfer some of the material to the disc to create the friction required (I may be wrong

).

So is it this material that is rusting?
and also, because of the nature of sintering, the pads must be porous, so are my pads thoroughly soaked in water/salt creating the pads to corrode from the inside?

I have some new pads on order, but was just curious.

By the way, GSXR 750 K7 radial callipers on SV1000 disc.

John.

Sid Squid · 06-01-14, 06:19 PM

Sintered pads are made from a powder that is heated to fuse the particles together, some constituents of the pad are ferrous metals, it's these that corrode and cause the pad to stick to the disc, which is completely normal and not a sign that they are 'going off'.

DavieSV · 06-01-14, 06:57 PM

But surely if they are corroding, then they are deteriorating. (ie going off).

DJ123 · 06-01-14, 07:28 PM

Quote:

Originally Posted by DavieSV

But surely if they are corroding, then they are deteriorating. (ie going off).

Ferrous metals rust. With brake pads and discs a new surface is being revealed every time you use the brakes. This is why most cars/bikes will get a surface rust on them when there is lots of moisture in the air.

DavieSV · 06-01-14, 07:30 PM

1 1/2 hours after getting home

You can see on the tyre where the rust has been scraped off previously.

DJ123 · 06-01-14, 07:31 PM

Are your discs near the near minimum thickness mark?

DavieSV · 06-01-14, 07:33 PM

I don't know about that.
I'll mic them up tomorrow.

DavieSV · 06-01-14, 07:35 PM

That shouldn't make a difference though should it?

dizzyblonde · 06-01-14, 07:35 PM

EBC discs by any chance?

If they are, mine do the same. Rust after an hour of standing still.

DavieSV · 06-01-14, 07:36 PM

Suzuki quality

06-01-14, 03:02 PM	#1
DavieSV Member Join Date: Nov 2005 Location: Ripley Derbyshire Posts: 596	Do sintered Pads go "Off" ? My front discs are rusty as a rusty thing. A quick ride soon cleans them off, but they rust again within hours. If I leave the bike for a few days after riding in the rain, the pads stick to the disc and need a good shove to break them off. Now I'm under the belief that sintered pads transfer some of the material to the disc to create the friction required (I may be wrong ). So is it this material that is rusting? and also, because of the nature of sintering, the pads must be porous, so are my pads thoroughly soaked in water/salt creating the pads to corrode from the inside? I have some new pads on order, but was just curious. By the way, GSXR 750 K7 radial callipers on SV1000 disc. John.

06-01-14, 06:19 PM	#2
Sid Squid No, I don't lend tools. Mega Poster Join Date: Jul 2003 Location: Skunk Works, Nth London Posts: 8,680	Re: Do sintered Pads go "Off" ? Sintered pads are made from a powder that is heated to fuse the particles together, some constituents of the pad are ferrous metals, it's these that corrode and cause the pad to stick to the disc, which is completely normal and not a sign that they are 'going off'. __________________ If an SV650 has a flat tyre in the forest and no-one is there to blow it up, how long will it be 'til someone posts that the reg/rec is duff and the world will end unless a CBR unit is fitted? A little bit of knowledge = a dangerous thing. "a deathless anthem of nuclear-strength romantic angst"

06-01-14, 06:57 PM	#3
DavieSV Member Join Date: Nov 2005 Location: Ripley Derbyshire Posts: 596	Re: Do sintered Pads go "Off" ? But surely if they are corroding, then they are deteriorating. (ie going off).

06-01-14, 07:30 PM	#5
DavieSV Member Join Date: Nov 2005 Location: Ripley Derbyshire Posts: 596	Re: Do sintered Pads go "Off" ? 1 1/2 hours after getting home You can see on the tyre where the rust has been scraped off previously.

06-01-14, 07:31 PM	#6
DJ123 Member Mega Poster Join Date: Jul 2011 Location: Somewhere over there Posts: 3,245	Re: Do sintered Pads go "Off" ? Are your discs near the near minimum thickness mark? __________________ BMW F800ST

06-01-14, 07:33 PM	#7
DavieSV Member Join Date: Nov 2005 Location: Ripley Derbyshire Posts: 596	Re: Do sintered Pads go "Off" ? I don't know about that. I'll mic them up tomorrow.

06-01-14, 07:35 PM	#8
DavieSV Member Join Date: Nov 2005 Location: Ripley Derbyshire Posts: 596	Re: Do sintered Pads go "Off" ? That shouldn't make a difference though should it?

06-01-14, 07:35 PM	#9
dizzyblonde Da Cake Boss Mega Poster Join Date: May 2007 Location: On a flying Horse Posts: 9,992	Re: Do sintered Pads go "Off" ? EBC discs by any chance? If they are, mine do the same. Rust after an hour of standing still. __________________ Suzy, yellow 2001 SVS. Kitty, V-Raptor 1000, ZZR1400<<its my bike now Pegasus! Hovis 13.8.75-3.10.09 Reeder 20.7.88-21.3.12

06-01-14, 07:36 PM	#10
DavieSV Member Join Date: Nov 2005 Location: Ripley Derbyshire Posts: 596	Re: Do sintered Pads go "Off" ? Suzuki quality

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