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Old 03-27-05, 05:40 PM   #1
Captain cool
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noisy disc break

I have an 04 Specialized Stumpjumper FSR with M525 brakes and XT rotors -

The front break does not really even work- you get on it really hard and it just screams out a horrible loud squeek... I tried everything... changed the pads - cleaned everthing - the rotor seams to be straight... and it is still the same...

I don't want to buy new breaks if I can help it...

What can I do?
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Old 03-27-05, 05:47 PM   #2
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its spelled brake.
What are you cleaning this stuff with? Isopropyl alcohol is best. Are you using these in wet conditions? Any disc brake will squeak in wet
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Old 03-27-05, 05:56 PM   #3
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take them off, and send them to me.
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Old 03-27-05, 06:08 PM   #4
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my rim brakes squeaked when they were wet
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Old 03-27-05, 06:12 PM   #5
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yeah, but rim brakes are inferior to disks.... period!
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Old 03-27-05, 06:23 PM   #6
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YEAH BUT THEYRE OLD SCHOOL
AND THUS

SUPER AWESOME

disc brakes also scare me what with the technology involved and all. They also add bling to my bike and I'm afraid I will attract thieves!
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Old 03-27-05, 06:28 PM   #7
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disc brakes are super easy to work/ adjust.... there is nothing to be scared of exsept your rim brakes *said in a spooky voice*
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Old 03-27-05, 09:54 PM   #8
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Quote:
Originally Posted by phantomcow2
its spelled brake.
i was wondering if it was just me, but seems everyone spells it wrong! its either, disc break, disk brake, disk break.. never Disc Brake.....
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Old 03-27-05, 09:56 PM   #9
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Right, Brake... OK



I used windex to clean the rotor, and sanded the newly replaced pads with 250 grit sand paper ... and it is still the same - it is like the pads are just getting glazed... it does the same thing even to a new set of pads right out of the package... I keep thinking that there is something wrong with the rotor, but I have been puting off replacing it, the bike probably has less than 20 hours riding on it... I moved shortly after I purchased the bike, otherwise I would have just taken it back to the dealer...
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Old 03-27-05, 10:16 PM   #10
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Quote:
Originally Posted by Captain cool
Right, Brake... OK



I used windex to clean the rotor, and sanded the newly replaced pads with 250 grit sand paper ... and it is still the same - it is like the pads are just getting glazed... it does the same thing even to a new set of pads right out of the package... I keep thinking that there is something wrong with the rotor, but I have been puting off replacing it, the bike probably has less than 20 hours riding on it... I moved shortly after I purchased the bike, otherwise I would have just taken it back to the dealer...
Never use Windex to clean rotors! You should ONLY use denatured alcohol to clean them. You've contaminated your pads. You have a couple of options.
  1. Buy new pads
  2. Try to cook the old ones usually this involves a blowtorch or your wife's oven. It's probably safer (for everyone) if you spent the $30 on new pads
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Old 03-27-05, 10:39 PM   #11
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Don't drag his wife's oven into this.
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Old 03-27-05, 10:42 PM   #12
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Originally Posted by Expatriate
Don't drag his wife's oven into this.
Yeah I probably shouldn't have mentioned that, but windex?
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Old 03-27-05, 10:44 PM   #13
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Quote:
Originally Posted by Raiyn
Never use Windex to clean rotors! You should ONLY use denatured alcohol to clean them. You've contaminated your pads. You have a couple of options.
  1. Buy new pads
  2. Try to cook the old ones usually this involves a blowtorch or your wife's oven. It's probably safer (for everyone) if you spent the $30 on new pads
HA! Wife's oven

+1 for something I laughed at
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Old 03-27-05, 10:46 PM   #14
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Really now, if it squeaks, just oil it.
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Old 03-27-05, 10:48 PM   #15
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Quote:
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Really now, if it squeaks, just oil it.
I KNEW someone would say that! Doesn't make it right, but I knew someone would say that
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Old 03-27-05, 11:00 PM   #16
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When we first took our tandem out, at every stop, people would come over to have a closer look. You'd be amazed (or not) at how many guys felt they had to put their damn grubby, greasy, oily fingerprints on my titanium rotors! Yeah, they looked cool, and were really expensive. Why the hell do you need to touch them?! They're a braking surface!
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Old 03-27-05, 11:52 PM   #17
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Quote:
Originally Posted by Expatriate
When we first took our tandem out, at every stop, people would come over to have a closer look. You'd be amazed (or not) at how many guys felt they had to put their damn grubby, greasy, oily fingerprints on my titanium rotors! Yeah, they looked cool, and were really expensive. Why the hell do you need to touch them?! They're a braking surface!
People are stupid like that. Of course watching someone do that after a long downhill would just about be worth cleaning the scorched flesh off
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Old 03-28-05, 12:03 AM   #18
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I wish. They were Ti, so they never stayed warm for very long. But why did they feel the need to touch them? Geez!!
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Old 03-28-05, 02:19 AM   #19
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Originally Posted by Expatriate
I wish. They were Ti, so they never stayed warm for very long. But why did they feel the need to touch them? Geez!!
Looking at Ti rotors does not justify its beauty.

Everyone wants to touch it first hand and be able to say "I touched a ti rotor"
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Old 03-28-05, 02:53 AM   #20
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Originally Posted by mindbogger
Looking at Ti rotors does not justify its beauty.

Everyone wants to touch it first hand and be able to say "I touched a ti rotor"
Hey, they can touch the damn frame! That's a big hunk of Ti too. I just wish people would keep their grubby digits off my braking surface. Anyhoo, as I've posted 100 times before, the rotors were crap anyway. Maybe I had so many issues with them because of all the morons that had to touch them.
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Old 03-28-05, 05:30 AM   #21
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Windex leaves residue, always fun. Thats probably why your brakes are screaming like a school girl who has just seen a frog
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Old 03-28-05, 09:31 AM   #22
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Think of Ti rotors as a hot naked chic laying in your bed; what are you going to do?
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Old 03-28-05, 09:52 AM   #23
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Quote:
Originally Posted by dirtjumpP.1
yeah, but rim brakes are inferior to disks.... period!
Explain. Except for immediate stopping power, rim brakes are cheaper, lighter and have less parts to worry about installing, breaking, replacing. Disc brakes are good for their immediate stopping power and thats about it.
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Old 03-28-05, 11:24 AM   #24
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Explain. Except for immediate stopping power, rim brakes are cheaper, lighter and have less parts to worry about installing, breaking, replacing. Disc brakes are good for their immediate stopping power and thats about it.
Oh you forgot about the whole stopping in rain/mud/slush, all kinds of other good crap part....
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Old 03-28-05, 11:36 AM   #25
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Explain. Except for immediate stopping power, rim brakes are cheaper, lighter and have less parts to worry about installing, breaking, replacing. Disc brakes are good for their immediate stopping power and thats about it.
I was once like you; I bought disc brakes and now I am not.

They are easier to adjust than vees. They work better, in wet and dry. The pads last longer too. They do weigh more and after using both that is the only down side.
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