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Adjusting a Shimano front and rear deraillieur

Discussion in 'Sports, Hobbies & Interests' started by Lentsnh, Mar 25, 2009.

  1. Mar 25, 2009 at 11:03 AM
    #1
    Lentsnh

    Lentsnh [OP] Well-Known Member

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    I want to adjust it becuase the place I got my mountain bike from didnt adjust anything.

    I have a 21 speed bike. The gears in the rear-- 1st,2nd, and 3rd are fine but then when I attempt to switch into 4th it changes gears twice. So its in 6th and when I change to 7th..... there is none:(


    For the front gears...... 1st just works (gets into gear-- it hesitates to) and then 2nd doesnt do anything (the chain just rubs the cage-- and I have to switch to the non existant gear to stop it from rubbing) and there is no 3rd gear.

    Already did the brake but not the front disc brake.. Help on that as well.:D
     
  2. Mar 25, 2009 at 11:06 AM
    #2
    lsocoee

    lsocoee My hair is all natural Staff Member

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    where the cable enters your derailleur, there is a barrel adjuster. Give it about a quarter turn clockwise and go for a test ride.

    There are also adjusters on the shifters that will accomplish the same thing, but I don't feel comfortable giving clockwise vs counterclockwise directions on those.
     
  3. Mar 25, 2009 at 11:08 AM
    #3
    lsocoee

    lsocoee My hair is all natural Staff Member

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  4. Mar 25, 2009 at 11:12 AM
    #4
    Lentsnh

    Lentsnh [OP] Well-Known Member

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    I dont have to worry about the High and Low screws?
     
  5. Mar 25, 2009 at 11:13 AM
    #5
    RelentlessFab

    RelentlessFab Tacoma offroad armor fabricating beast Vendor

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    Had tons on the Taco's.... new truck is pretty stock
    your bike shop should have properly set up the bike before the sale. make them do it.
     
  6. Mar 25, 2009 at 11:16 AM
    #6
    lsocoee

    lsocoee My hair is all natural Staff Member

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    Generally, no, but you might. High and low should be adjusted once when the bike was built and then adjusted if you are having issues at the high and low gears.

    The high and low screw set your limits, the problem you described sounds like a cable tension issue.

    You should go check out the video sites, seeing is easier than reading what to do.
     
  7. Mar 25, 2009 at 11:17 AM
    #7
    lsocoee

    lsocoee My hair is all natural Staff Member

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    I think it was a Wally World purchase.
     
  8. Mar 25, 2009 at 11:18 AM
    #8
    Lentsnh

    Lentsnh [OP] Well-Known Member

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    Sports Academy--- Its a temporary bike until I get a Summer job
     
  9. Mar 25, 2009 at 11:19 AM
    #9
    lsocoee

    lsocoee My hair is all natural Staff Member

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    I would recommend breaking it in for a month, then bring it in to a bicycle shop and pay for a tuneup. (~$40-55)
     
  10. Mar 25, 2009 at 11:22 AM
    #10
    Lentsnh

    Lentsnh [OP] Well-Known Member

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    Yeah I heard that you needed to wait until the cables have stopped stretching....
     
  11. Mar 25, 2009 at 11:25 AM
    #11
    lsocoee

    lsocoee My hair is all natural Staff Member

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    Correct. When you bring it in, they'll adjust brakes, derailleurs, wheels, and check over the bike.
     
  12. Mar 25, 2009 at 11:28 AM
    #12
    Lentsnh

    Lentsnh [OP] Well-Known Member

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    alright good. Ill wait a month then :D
     
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