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Old 06-30-2014, 11:07 PM   #1
Nailhead OP
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Question What to Clean My Brakes With...

The last ride I took was a mudfest, and it left some sort of residue on my front brakes that make them almost useless: it's like they're soaking wet all the time.

What would clean rotors & pads, and restore them to their pre-mud effectiveness? Solvent? ScotchBrite?

i'd post a photo, but I won't see the bike until Thursday.
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Old 06-30-2014, 11:43 PM   #2
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Well, um, I'd start with brake cleaning solvent. Get the stuff in the red can. You can tell if it's the good stuff by the label on the back: "known by Kalifornia to give rats cancer"

Soak the brake pads with it and rough them up with 80 grit. Heat them with a good heat gun, cool and repeat. Get them good and hot. If there's oil in them you'll see it bubble out. I've recovered a few pads that were oiled by leaking fork seals. Doesn't work all the time. Do it well ventilated because heating clorinated solvents makes phosgene gas, called Mustard Gas in WW One.

Rough up the disks with 80 grit and brake cleaner. Don't use power tools, you may grind a bad spot.

Ride it and do some repeated stops. Don't let it get real hot. You are coating the disks with brake material. It may take 10 or more stops for it to come back. About 100 miles to get to max. If it doesn't work, get new pads and rough the disks again.
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Old 07-01-2014, 12:50 AM   #3
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Thanks, Zube, but it's not an oil-based problem, so do you still think I need to go through the heating process?

I like the 80-grit idea: gets things done.
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Old 07-01-2014, 01:32 AM   #4
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Maybe it's your brake.... Fluid. Mushy feeling? Pads don't get damp. I've run hours of ISDE Qualifier in the rain. They don't get wet...
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Old 07-01-2014, 03:32 AM   #5
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Maybe it's your brake.... Fluid. Mushy feeling? Pads don't get damp. I've run hours of ISDE Qualifier in the rain. They don't get wet...
No, they feel same as ever, just ineffective. I just need an idea of how to remove the weird hardened masonry glaze from rotors & pads (see "residue" above).

I wish I had a pic-- it really is hard to describe.

Zuber's suggestion was the seed of an idea: 80-grit used flat on a metal plate to clean pads, then a Very Fine ScotchBrite to polish rotors. Any bad side to this I might not be seeing?
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Old 07-01-2014, 07:36 AM   #6
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I just use a wire brush on the pads.
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Old 07-02-2014, 04:03 AM   #7
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I just use a wire brush on the pads.
Noted. I'll try almost anything at this point. I like brakes.
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Old 07-02-2014, 05:56 AM   #8
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I had a MK1 Lemans Guzzi once. Rode it to Philip Island to see Superbikes. At South Australian border it started to rain. By the time we got to PI the rain was sidways and they canx the second race. Meeting was a wash out.
I had no brakes untill we left Victoria and got a good day of no rain.
So some pads can get effected by water. (this had no mud)
No amount of applying brakes while moving changed things.

Wife was not impressed years later when I told her !!!
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Old 07-02-2014, 06:09 AM   #9
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wd40
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Old 07-03-2014, 03:16 AM   #10
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wd40
We'll take turns-- you're first.

I've got a long ride planned for Saturday, and I'm not going to use those wheels (knobbies). I've got new rotors for the set I'll run (Mefos) so I'll just sand the pads with 80-grit & be on my way. That way I can procrastinate on the pottery-glazed rotors, which is really how I deal with most things.
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Old 07-03-2014, 06:19 PM   #11
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Use some 220grit sand paper. Use an orbital sander on rotors and place the paper on a flat surface and hand sand the pads. Id also flush the fluid. I prefer having fresh. Its cheap and easy.
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Old 07-03-2014, 06:52 PM   #12
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In the time it takes you to mess around cleaning pads.....other than just hosing them off with high pressure water.....you could change the pads.

Cheap and easy
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Old 07-03-2014, 07:14 PM   #13
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Have you bought pads for your KTM already?? You might remove the cheap bit,, easy YES. Unless someone knows a secret source for the sintered brembos for me? I just started shopping,, and so far not finding a brand pad for much under 100 for the front..
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Old 07-03-2014, 07:31 PM   #14
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Have you bought pads for your KTM already?? You might remove the cheap bit,, easy YES. Unless someone knows a secret source for the sintered brembos for me? I just started shopping,, and so far not finding a brand pad for much under 100 for the front..
I do not buy KTM nor Brembos brand.......have a look on ebay
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Old 07-03-2014, 08:03 PM   #15
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Have you bought pads for your KTM already?? You might remove the cheap bit,, easy YES. Unless someone knows a secret source for the sintered brembos for me? I just started shopping,, and so far not finding a brand pad for much under 100 for the front..

HH...anything.
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