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Mountain Bike question

Discussion in 'Sports, Hobbies & Interests' started by Lentsnh, Mar 27, 2009.

  1. Mar 27, 2009 at 4:04 PM
    #1
    Lentsnh

    Lentsnh [OP] Well-Known Member

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    How do you tighten the cranks on a MB? They wobble and squeak when I pedal
     
  2. Mar 27, 2009 at 4:50 PM
    #2
    zigzagg321

    zigzagg321 T100

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    take off the pedals at the bottom bracket. Then, depending on what bike you have, there may be any of a few different styles of fastening for the internals of the bottom bracket. tighten depending on what you find in there.
     
  3. Mar 27, 2009 at 5:57 PM
    #3
    gdctaco

    gdctaco Well-Known Member

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    evrytime i had that prob, older GT, it was a blown bottom bracket.
     
  4. Mar 27, 2009 at 7:01 PM
    #4
    Lentsnh

    Lentsnh [OP] Well-Known Member

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    Well its a Brand New bike only had it for a week or so
     
  5. Mar 27, 2009 at 7:04 PM
    #5
    bradu81

    bradu81 Well-Known Member

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    what type of cranks do you have?
     
  6. Mar 27, 2009 at 7:17 PM
    #6
    Lentsnh

    Lentsnh [OP] Well-Known Member

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    My temporary bike I got is a Mongoose Detour MB. Its stock.


    I might keep it and just mod it.... or wait until I get a job and get a REAL bike
     
  7. Mar 27, 2009 at 7:18 PM
    #7
    Lentsnh

    Lentsnh [OP] Well-Known Member

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  8. Mar 27, 2009 at 7:27 PM
    #8
    FlawedXJ

    FlawedXJ mall crawlin', web wheelin', concrete cowboy

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    I actually have a jeep now. Imagine that.
    once you can drive, you're not going to want to do anything to a bike.....promise.
     
  9. Mar 27, 2009 at 7:33 PM
    #9
    Lentsnh

    Lentsnh [OP] Well-Known Member

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    Your probably right about that. I still need to fix this crank issue

    Mod Bug is in season for me.
     
  10. Mar 27, 2009 at 7:34 PM
    #10
    FlawedXJ

    FlawedXJ mall crawlin', web wheelin', concrete cowboy

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    I actually have a jeep now. Imagine that.

    Oh yeah. Something about the warm weather is making me build endless shit. Just did somethings to my dads truck for him even though he didn't ask me too. I gotta be working on something at all times.
     
  11. Mar 27, 2009 at 7:39 PM
    #11
    Lentsnh

    Lentsnh [OP] Well-Known Member

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    X2 on working on something all the time. When I get bored I find something, take it apart and put it back together over and over again.

    What did you do? I was about to do the Fog Mod today but missed my chance
     
  12. Mar 27, 2009 at 7:46 PM
    #12
    lsocoee

    lsocoee My hair is all natural Staff Member

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    don't ride the bike with loose cranks. You can easily damage the cranks and the bottom bracket.

    This was one of those things I was hoping wouldn't come up until the tune up. You can bring it in to a shop and hope they're nice, or you can use an 8mm Allen wrench. You'll need a long one. Tighten the snot out of it, but do not let it slip/strip.

    As a previous poster mentioned, there is no need to remove the cranks. Just tighten them up.
     
  13. Mar 27, 2009 at 7:48 PM
    #13
    zigzagg321

    zigzagg321 T100

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    did you remove the pedal arms yet and see what your working with?
     
  14. Mar 27, 2009 at 7:57 PM
    #14
    Lentsnh

    Lentsnh [OP] Well-Known Member

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    Thats exactly what I did. Tightened the snot out of them but yet they still wobble and squeak (more like a muffled squeak)
     
  15. Mar 27, 2009 at 7:59 PM
    #15
    Lentsnh

    Lentsnh [OP] Well-Known Member

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    Crank arms? no I havent. Its a BRAND NEW bike. :(
     
  16. Mar 27, 2009 at 8:02 PM
    #16
    lsocoee

    lsocoee My hair is all natural Staff Member

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    a squeak is OK. Some just do that. You can also take off your pedals, grease the threads and reinstall the pedals.

    http://www.expertvillage.com/video/4849_remove-pedals-bicycle.htm

    Sometimes removing the cranks, greasing the bottom bracket spindle, and correctly torquing the cranks back on will help. There is also the possibility that you rode too long with them loose and they began to wear out on the mating surfaces.
     
  17. Mar 27, 2009 at 8:03 PM
    #17
    lsocoee

    lsocoee My hair is all natural Staff Member

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    that wasn't put together appropriately :smack: Buy your nice bike from a bicycle shop and use their free tune ups.
     
  18. Mar 27, 2009 at 8:13 PM
    #18
    Lentsnh

    Lentsnh [OP] Well-Known Member

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    Ok ill try that tomorrow. But when I started to tighten them today. they were very tight maybe 1/8th of a turn is all it could give
     
  19. Mar 27, 2009 at 8:14 PM
    #19
    Lentsnh

    Lentsnh [OP] Well-Known Member

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    I am.:) Once I get the money:rolleyes:
     
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