Not the brightest . . .-
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  1. #1
    I always bleed like this.
    Reputation: PoorBehavior's Avatar
    Join Date
    Sep 2005

    Not the brightest . . .

    I don't know jack and new to SS so sorry for the long post.
    I have a chain tension question and as it says, I am no bike mechanic. I noticed that after getting the chain tension where I wanted it, 1/2 inch play, it seemed to loosen up. I messed with it for a while and noticed that with the crank at certain positions the chain was tighter than at other positions. Spent a lot of time checking dimensions to see if something was off. Pulled the crank/BB off, measured the hole to hole spacings even. After putting it all back together it seems like when I turn the crank the chain gets tight, as in the play goes to nothing after I stop turning the crank. If I pinch the chain top and bottom towards each other the chain loosens up, noticably. Everything is tight, the sliding dropouts are not moving and when I spin the crank again same thing happens.
    Sorry for my obvious ignorance but Is this normal?

  2. #2
    Reputation: standard235's Avatar
    Join Date
    Jul 2005
    Sometimes chains have tightspots. I know it occurs with cheaper chains.

    My HG53 I ran on my BMX bike was slightly like that. On my cousin's street BMX bike, his chain has more noticeable tight spots. It's normal.

  3. #3
    FTM is offline
    Reputation: FTM's Avatar
    Join Date
    Sep 2004
    Quote Originally Posted by PoorBehavior
    Is this normal?
    Yes. At least not uncommon. Chainrings are rarely perfectly round.
    Sheldon Brown has some good tips on minimizing this problem.

  4. #4
    I always bleed like this.
    Reputation: PoorBehavior's Avatar
    Join Date
    Sep 2005
    Hey, thanks for the replies guys, should have asked before taking the drivetrain apart.
    Thanks for the link too FTM, can use all the help.

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