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Old 05-22-09, 07:02 PM   #1
evul9
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Weird sound when i am leaning to the right.HELP!!!!

OK, so i have a 2008 trek 4300. I don't know how to explain it but i hope you understand this. When i am on the bike when i lean the bike so its leaning to the right but i am on the left side( Like when you pedal really hard your bike is leaning to the other side then where your body is leaning) or when i just turn to the right sharply there is this srsrsrsrsrsrsrrsrrrrrsssss sound. I don't understand this but it sound like it is coming from the back wheel. I haven't done anything crazy on my bike recently so if you have an idea of what this could be please tell me.
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Old 05-22-09, 07:12 PM   #2
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4300 regular or disc version? Sounds like it might be disc rub. I get it on my bikes occasionally.

-R
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Old 05-22-09, 07:13 PM   #3
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no its the standard
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Old 05-22-09, 07:19 PM   #4
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When you lean, both the wheel and the frame flex somewhat. Check your clearances between the tire and the frame and between the rim and the brake pads.
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Old 05-22-09, 07:27 PM   #5
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OK Went outside and i did it and looked and it docent look like that's the problem. I explained it a bit wrong. The noise is going from the back wheel and it goes like this. At about 8 MPH it sounds like the train thing the old trains but much higher pitch. At 8 MPH it clicks for about .2 seconds and then silent for about .8 seconds and keeps repeating.

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Old 05-22-09, 07:30 PM   #6
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One thing that happened that drove me crazy was the rear derailleur cable was hitting the rear tire, check that.
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Old 05-22-09, 07:39 PM   #7
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No that cant be it. The cable is way too far away and attached to the frame
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Old 05-22-09, 07:47 PM   #8
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Is there any play in the rear or front wheel? Maybe the wheel bearings holders need to be tightened?

Also have you look at the clearance between the rear tire and the chain stays.
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Old 05-22-09, 07:50 PM   #9
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that looks fine but i might tighten the bearings if you tell me how
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Old 05-22-09, 08:26 PM   #10
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Sounds like a clicking that happens each time the wheel goes around? One thing that solved that on one of my bikes is put a drop of oil each place where the spokes cross and on each spoke nipple.

Any loose spokes? If you pluck any of the spokes with your finger (removing the reflector) they should go 'ding,' maybe one of them goes 'thud.'
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Old 05-22-09, 08:32 PM   #11
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Brake rubbing on the rim/lip of the tire from the sideways forces from the off center leaning? (rims can flex a lot under load and high sideways forces.


Disconnect your rear brake and re-try the test to be sure it's not that.
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Old 05-22-09, 10:22 PM   #12
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ok will try tomorow
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