|   hydralic deore disk on my 6700 make noisy and vibrate t bike | robertp
Jul 14, 2002 1:30 PM | | if u pull it a little it make nosiy but pull it harder it shuts up we have adjusted them and all and it still makes noisy any help appreciated if different pads would do the trick let me know thanks |
| Is it mounted right to the frame, or an adapter on the frame? | Twilight Error®
Jul 14, 2002 3:31 PM | | I know more than a few people have had vibration/squealing with adapter-mounted brakes on Trek bikes.
Check all your bolts for the right torque and make sure your QR is nice and tight. |
| Second that. | Schtoo
Jul 15, 2002 12:50 AM | | My hayes don't make a peep other than the small metal-on-metal noise that hayes have.
I think the 6K and up use a direct mount, no adapter aside from the caliper adapter. Don't matter, make sure everything is tight and the noise should go away. |
| Disc mounts on Trek/Fisher/Klien | shiggy
Jul 16, 2002 11:56 AM | | I believe all of the Trek family frames use a bolt-on rear disc mount. The models that are sold with disc brakes may have the mount installed before the frame is painted. You can add the mount to a Fuel 100 or a 4300 and it is the same mount. |
| And be sure all three bolts are installed | shiggy
Jul 15, 2002 12:22 PM | | I have seen the Trek disc mount installed with out the middle bolt. Without it, the brake is sure to shudder. |
| Uhhh... Mine doesn't. | Schtoo
Jul 16, 2002 3:26 AM | | It's fitted with two bolts, no noise.
Just the right bolts and the right washers, the right tension and loctite for good measure.
I'll check but I am not sure that third bolt can even be used. If it can be, I doubt I would have left it out. |
| The third, center bolt threads in from the inside of the dropout | shiggy
Jul 16, 2002 11:50 AM | | The extra bracing/clamping does make a difference. If the shop mechcanic does not know to put the bolt in, he may leave it off. I have seen it done. |
| Ahh, I see... | Schtoo
Jul 16, 2002 8:29 PM | | The mechanic prolly looked at it and said to himself "I see, but who needs that?!?".
That's what I said anyway. ;)
I'll take a look, but the way that back brake works now I doubt an extra bolt is gonna do anything more than turn orange after the first ride. It be wet around these parts. |
| You might need a special strut to take out the vibrations... | firecrotch
Jul 15, 2002 8:37 AM | | This is the rear disc, correct? If so it is possible that you'll need a special strut that attaches from the caliper to the left brake boss to take out any vibrations. I work for a Trek dealer and our rep has told us that some of the Trek and Fisher frames have this problem and that Trek is treating it like a warranty thing. Just go to your local Trek Dealer and request that they order you one. It should cost nothing. BUT FIRST, determine that the noise is not a result of the pads or setup. Check the adapter bolts as mentioned above. Trek actually puts the adapter on before painting the frame, so frame paint shouldn't be the problem. Also, switch the pads front to rear (If the front ones are quiet). Still makes noise? Probably not the pads, but clean them anyway with isopropyl alcohol (don't use automotive brake cleaner, it is too harsh for shimano's organic pads.) Clean the rotors as well. Still squealing? Time to ask about that strut. I had to get one for my Klein Attitude Disc, I actually fabricated a strut from a rack strut and am using that until the real thing arrives. Expect atleast a couple weeks turnover on the strut, that's typical (I'm still waiting!). Hope that helps.
-Ryan |
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