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  1. #1
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    Help horrible chainsuck in small front gear!

    I just replaced the worn out chain rear derailure and casette on my bike. It rides perfectly in the middle chain ring. As soon as I put it into the small ring it goes but makes allot of noise until I start to pedal hard such as up a steep hill, then it gets chain suck in any gear with the small ring. I know that I was having a similar problem with the casette and and it was fixed once I replaced. Are the front chain rings worn to that point also? Is there any break in needed for the chain, or can this be adjusted or am I stuck until I replace the chain rings which unfortunatly means the whole cranks, and most likely the bottom bracket. Is there a quick fix or am stuck without my low gears for a race on saturday which hopfully the course isn't too hilly?

  2. #2
    mtbr member
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    what cranks you got that you can't replace the small ring- I'm thinking the new tighter chain is havin trouble with the old granny

  3. #3
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    Quote Originally Posted by skywaybuzz
    what cranks you got that you can't replace the small ring- I'm thinking the new tighter chain is havin trouble with the old granny
    Stock cranks on a 2002 Giant Rainier I am not 100% if I can replace the granny or not. I see bolts for the out side but the ones on the small ring look like bolts but I can't get a hex key in the so I am assume that they are rivets.

  4. #4
    rolling in the greens
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    you need a crank puller...can you flip a 22t chainring?

    take it to the shop that did the other work...have em throw on a granny should be fairly cheap.

    Not to derail the thread but does anyone know if halfway through the life of a granny(22 tooth chainring) if you took it off and flipped it over would it extend the life. Seems to me that the barrells of the chain would then be pushing on the other side of the tooth therefore more time before the teeth get caved and cause chainsuck.
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  5. #5
    Chatham NJ
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    I dont think you could flip any of the gears, I know my granny isnt flat, so if you flipped it it would be in a different spot.

  6. #6
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    Quote Originally Posted by vermont
    take it to the shop that did the other work...have em throw on a granny should be fairly cheap.

    Not to derail the thread but does anyone know if halfway through the life of a granny(22 tooth chainring) if you took it off and flipped it over would it extend the life. Seems to me that the barrells of the chain would then be pushing on the other side of the tooth therefore more time before the teeth get caved and cause chainsuck.
    The chainrings were riveted together so no luck on replacing the granny, but a set of LX cranks are being installed as we speak. I don't think that you can flip the gear because of its concave shape, not to mention the teeth would be reversed which would cause problems.

  7. #7
    willtsmith_nwi
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    New Crank ...

    Quote Originally Posted by mikeyp187
    Stock cranks on a 2002 Giant Rainier I am not 100% if I can replace the granny or not. I see bolts for the out side but the ones on the small ring look like bolts but I can't get a hex key in the so I am assume that they are rivets.
    You have probably worn out your crank. And I'm guessing it's one of the generic cranks. I have the SAME problem with my 2004 Yukon.

    The only remedy is to clean and lube everything REALLY well. Stiff links in the chain can exasperate the problem. So can big chunks of mud in the chain housing. Of course, all that cleaning counts for nothing if you go out and ride in mud.

    I'm having my crank replaced at this time because the stock giant is such a collosal piece of ****. I actually managed to wear out the middle chainring in a matter of 3 months.

  8. #8
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    Seems I got to you a little late...Generic cranks such as the ones you have more likely than not do not have a removable granny..What you can do however, is file down the ring..If you look closely, it will appear as though each tooth looks like a wave..They are supposed to be symmetrical. If you can notice the little "hooks" on the tourqued side of each tooth, and file that down, you should be grand.

  9. #9
    rolling in the greens
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    Sheldon Brown covers this in detail here


  10. #10
    willtsmith_nwi
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    Crank update ...

    Quote Originally Posted by willtsmith_nwi
    You have probably worn out your crank. And I'm guessing it's one of the generic cranks. I have the SAME problem with my 2004 Yukon.

    The only remedy is to clean and lube everything REALLY well. Stiff links in the chain can exasperate the problem. So can big chunks of mud in the chain housing. Of course, all that cleaning counts for nothing if you go out and ride in mud.

    I'm having my crank replaced at this time because the stock giant is such a collosal piece of ****. I actually managed to wear out the middle chainring in a matter of 3 months.
    A new Deore Octalink crankset did the trick. I've ridden it through the muddiest, soggiest conditions and absoluetly no chain suck (even with a poorly lubed chain).

    Heh, now I've replaced the entire stock drivetrain on the bike. Anything less than Deore is only suitable for flat dry trails. Enthusiasts need better equipment. A lesson to everyone to throw a couple hundred extra dollars into a bike purchase. It will cost more after the fact.

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