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  1. #1
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    Rear rotor rubs only when sitting on bike

    I'm having a hard time figuring out why this is. Any help is greatly appreciated.

  2. #2
    ed
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    I'm suspicious of a crooked swingarm...what kind of bike?

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    one less horse cryptid01's Avatar
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    Broken stay, axle, hubshell or crack around pivot? If the swingarm were simply bent it wouldn't change the relationship between brake/dropout/wheel.
    Last edited by ed; 09-26-11 at 01:47 PM.

  4. #4
    Whistler-bound dminor's Avatar
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    Add: bad swingarm bearings/bushings; axle not bottomed in and or tight in dropouts; bad hub bearings.

  5. #5
    ed
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    Quote Originally Posted by cryptid01 View Post
    Broken stay, axle, hubshell or crack around pivot? If the swingarm were simply bent it wouldn't change the relationship between brake/dropout/wheel.
    Yeah...that's what I meant...

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    one less horse cryptid01's Avatar
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    On second thought ed, perhaps it could be a bend - like if it were an FSR and only the chainstay was bent, it could be aligned when static but once the suspension was compressed it would change relationship to the seatstay/brake mount. Although I suspect that'd be highly unlikely.

    Maybe the OP weighs 4 bills and the rear triangle is mild steel? We need moar data.

  7. #7
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    Quote Originally Posted by ed View Post
    I'm suspicious of a crooked swingarm...what kind of bike?
    It's a 2012 Giant XTC2 (hardtail).

    Guys, I should mention that it rotor rubs against the brake pads, if that makes any difference. I only weigh about 150lbs aswell.

    Last edited by MegaDave; 09-26-11 at 04:28 PM.

  8. #8
    Whistler-bound dminor's Avatar
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    Then I would: 1) make sure your axle/bearings don't have any slop; and 2) that the axle is firmly seated in the dropouts and that your skewer is snug.

  9. #9
    ed
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    I still think it's the swingarm.

  10. #10
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    I got the bike two days ago, so I'll bring it in and have the place look at it.

    Thanks for your help guys.

  11. #11
    ed
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    So it's brand new? Yell heah man, take it back. Prolly in the hub area as them doods said.

  12. #12
    Senior Member dsprehe89's Avatar
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    Quote Originally Posted by ed View Post
    So it's brand new? Yell heah man, take it back. Prolly in the hub area as them doods said.
    +1 If I bought a bike brand new and it was only 2 days old and something started rubbing, the last thing I would do is come here and start debating what I should do. Even though everyone here is really friendly, and usually very helpful, why would you try fixing a bike that not only has a warranty, but is literally brand new! I like to think that I am pretty handy with tools and pretty good at working on my bike (not as good as many of the people on here, but experience makes perfect), and I wouldn't touch a single thing on a bike if I bought it brand new except the occasional brake and derailleur tweak. And that is because when you buy a bike from a LBS you aren't just buying the bike, but you are buying their services, otherwise you would just shop online, and your LBS knows this. Let them figure out what is wrong with it, unless you literally took it down a mountain the day you bought it, you shouldn't have to be dealing with rubbing or noises with a brand new bike.
    infinitesimal - The amount of actual performance improvement gained from most cycling expenditures.

    Quote Originally Posted by Zephyr11 View Post
    AMish hardtail = An all-black bike with no rear-suspension that is intended to be ridden on farms. It also has the ability to bunnyhop over piles of horse poop. Most also have bashguards because showing up to church with a pant leg that got ripped up by your chain is frowned upon.

  13. #13
    one less horse cryptid01's Avatar
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    Quote Originally Posted by dsprehe89 View Post
    I wouldn't touch a single thing on a bike if I bought it brand new except the occasional brake and derailleur tweak.
    That may be all that's required based on the limited info he's provided. Why waste what could be potentially hours if there's a possibility you could fix it yourself in 30 seconds?

    MegaDave, have you tried realigning the caliper?

  14. #14
    Senior Member dsprehe89's Avatar
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    Quote Originally Posted by cryptid01 View Post
    That may be all that's required based on the limited info he's provided. Why waste what could be potentially hours if there's a possibility you could fix it yourself in 30 seconds?

    MegaDave, have you tried realigning the caliper?
    True, I didn't fully understand what the issue was when I originally wrote that comment, I saw that he said it was a 2 day old bike and decided to say that any issue that can't be solved easily (and I mean extremely easily) then the bike should be taken to the LBS. But I also have never owned a brand new bike and would baby the heck out of it I/when I get one (I'm sure after owning many new bikes in the distant future I will look at it differently). BTW, aren't the pads suppose to rub the rotor? I know on cars the pads are alway in contact with the rotor. I'm assuming he is complaining about rubbing noise and not the actual rubbing itself.
    infinitesimal - The amount of actual performance improvement gained from most cycling expenditures.

    Quote Originally Posted by Zephyr11 View Post
    AMish hardtail = An all-black bike with no rear-suspension that is intended to be ridden on farms. It also has the ability to bunnyhop over piles of horse poop. Most also have bashguards because showing up to church with a pant leg that got ripped up by your chain is frowned upon.

  15. #15
    Official Website Waterboy born2bahick's Avatar
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    It's refreshing to see some help in thread that doesn't assume everything.

  16. #16
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    Quote Originally Posted by cryptid01 View Post
    That may be all that's required based on the limited info he's provided. Why waste what could be potentially hours if there's a possibility you could fix it yourself in 30 seconds?

    MegaDave, have you tried realigning the caliper?
    Yep, loosened caliper, pulled on brake, retightened caliper.

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