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Brake dis discolored from heat - How to restore

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Old 04-18-2007, 11:47 AM
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Default Brake dis discolored from heat - How to restore

Long story short, my front disc got overheated and changed color...anyway to get it back to normal?

I was wondering about heating it up some and using Easy-off oven cleaner...worked on my pipes.

I will probably have to sand it or something.

Anyone have a solution?
 
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Old 04-18-2007, 12:48 PM
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Default RE: Brake dis discolored from heat - How to restore

fine sand paper. Ideally, sand from center of hub out to the outer edge. I'm assuming you don't have a chrome rotor. If that's the case forget the sand paper. Not sure on chrome.
 
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Old 04-18-2007, 04:49 PM
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Default RE: Brake dis discolored from heat - How to restore

No chrome...stock 2006 Bob.

I may try some steel wool with metal polish.

I was hopeing for something quick and easy, but that never happens for me!

Thanks.
 
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Old 04-18-2007, 09:32 PM
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Default RE: Brake dis discolored from heat - How to restore

The thing to worry about is not that the color changed, but what it has done to the heat treating. Do what you will to restore the color, but keep a close watch for warping and small stress cracks.
The stuff they use on stainless steel cookware might do the trick, and most of that is very close to a wipe-on, wipe-off polish.
 
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Old 04-18-2007, 10:06 PM
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Default RE: Brake dis discolored from heat - How to restore

Any reason you wouldn't just buy a new one and bolt it on?
 
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Old 04-18-2007, 10:23 PM
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Default RE: Brake dis discolored from heat - How to restore

If a brake disc has been overheated enough to discolor, you've changed it's temper. And you haven't done it evenly. Pitch it and buy another one, they are cheap. Lots of them on e-bay last time I looked.

 
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Old 04-19-2007, 01:03 AM
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Default RE: Brake dis discolored from heat - How to restore

Just sand it. 320-2000 will get you this...

[IMG]local://upfiles/17633/E380B84BC08A462F903AC99B563E0202.jpg[/IMG]
 
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Old 04-19-2007, 11:22 AM
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Default RE: Brake dis discolored from heat - How to restore

Ok, here's the long story.

I changed my bars but didn't have the right front brake line.

I thought i could just cap the caliper off and ride the bike without a front brake tillthe linearrived.

I wanted to test out the new bars so i went for a ride.

i only got less than a mile away when I felt the front end dragging a little. The pressure built up in the caliper and was squeezing the pads.

I turned around and went home.

I rode about 1 mile or less with the front brake dragging enough that I could tell it was on.

I don't really think major damage was done because the brake pads have already worn away the discolored area where they grab.

I just wanted toclean up the area around it.

I may not even mess with it now that it's finally getting nice enough to ride!
 
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