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  1. #1
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    Minimizing chain suck

    I've had my fuel ex5 for about a year and half and have bent three chains already due to chain sucking.

    Anyone have any tips for preventing chain suck in future?

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  2. #2
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    I haven't experienced chain suck since my Gary Fisher Sugar 2! That had to be 16 or so years ago. Maybe you have spacers in the wrong spot on the crankset? Go to a 1x?

  3. #3
    RAKC Industries
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    Bad chain line and cross chaining are big causes of it. Non-existant for properly maintained, set up, and shifted set ups. Clutched RDs helps a bit too.

    Bad chain rings is a cause for those with miles on them. Teeth end up hooked so they dont release the chain.

    Not sure what year ex5 you have, so not sure if it has 2x or 3x crankset, what cassette set up you have etc. Im going to guess 2x drivetrain since you posted in the 27.5 forum (though should be asking in drive train forum)

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  4. #4
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    Ya I have the 2 by 8 i believe and didn't notice a drivetrain forum. The first chain suck incident was less than 1 mile on the odometer. Granted I changed gears under load but still. I've never had any other bike do this like this fuel ex5

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  5. #5
    RAKC Industries
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    You either changed the front or cross chained it while doing it.

    Not the bike there at all, literally nothing wrong with it. Your doing a big no-no, especially on a full suspension. You break things doing that.

    Need to properly anticipate your gearing and first of all, learn to unload the drivetrain to shift.

    Chain suck is the least of your issues, wait till you snap the rear derailleur off.

    Sorry, not trying to sound harsh, not my intent, just trying to be clear and direct. This one isnt the bike, its the rider.

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  6. #6
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    Majority of my chain suck issues came from worn chain rings.

  7. #7
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    That's what I thought, I just wanted to make sure it is me. What do you mean by unloading the drivetrain to shift.

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  8. #8
    because GIANT
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    Quote Originally Posted by stx.dead.I View Post
    That's what I thought, I just wanted to make sure it is me. What do you mean by unloading the drivetrain to shift.

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    unloading means pedaling only enough to move chain, not trying to power the wheel hard at that moment

    if on a hill, to unload the chain, you gas it, then let up but keep pedaling to shift
    "Eating Spam, and Oreos, and drinking Thunderbird, baby" -Baby Huey/James Ramey

  9. #9
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    2x8? What year is this? You are overdue for an upgrade.

  10. #10
    Merendon Junkie
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    In my experience, chain suck can be caused by a number of reasons, but the one I most commonly see is dirt and gunk accumulation. A muddy or wet ride, messy lube and/or applying it wrong will cause chain suck sooner or later.

    I had constant chain suck in dirty or wet rides on one of my bikes with a 22 tooth granny ring. The chain suck only happened on the small chainring only, and always by the end of the ride after several stream crossings. I was about to change the chain ring to a 24 but I tried changing to squirt lube first. I never had another issue with chain suck after switching to squirt.

    Cheers
    Abel

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  11. #11
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    Quote Originally Posted by RAKC Ind View Post
    You either changed the front or cross chained it while doing it.

    Not the bike there at all, literally nothing wrong with it. Your doing a big no-no, especially on a full suspension. You break things doing that.

    Need to properly anticipate your gearing and first of all, learn to unload the drivetrain to shift.

    Chain suck is the least of your issues, wait till you snap the rear derailleur off.
    This is some great advice for any bike.

  12. #12
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    i have had chain suck many times... and every time the problem has been a worn front chain ring... as said before, the teeth become hook shaped and grab onto the chain instead of freely releasing it...

    I can't believe some of the responses I am reading above... huh...

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