Chain keeps getting jammed in cogs!!

Discussion in 'Transmission / Drivetrain' started by Bboyphil, Jul 16, 2013.

  1. Bboyphil

    Bboyphil New Member

    Ok I'm to the point of killing myself badly!! This is the 10th time that's happen to me and it got me stuck in the ****ing highway!! Ok so I was riding my bike and at one point my bike chain gets stuck in the cog at a certain speed. And usually I just wiggle and yank it off of the cog but not this time, it's dead stuck in the cog; I ripped the chain in half, my hands are full of cuts from yanking the chain and it still won't unjam!! Please help me you guys are my only hope from killing myself!!!!!

    Update on what anton told me to do...: http://www.youtube.com/watch?v=RdEHu08IqqM&feature=youtu.be

    Btw: the cover of where the chain and cog connect the bolts are stripped so there's no getting inside the cog.

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    Last edited: Jul 17, 2013

  2. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

    Post some pics please.
     
  3. Anton

    Anton Administrator Staff Member

  4. Bboyphil

    Bboyphil New Member

    Anton I said the bolts are stripped...
     
  5. crassius

    crassius Well-Known Member

    parts of this thread seem to be missing ???
     
  6. Anton

    Anton Administrator Staff Member

    Oh right I see you edited your original post and added photos. Try using a flat head screw driver to pry the chain free.

    If that doesn't work then it looks like you'll need to get and easy-out kit (not sure what they call it in your country could be something different). With this you drill into the center of the bolt and then screw and ezy out into it which will give you enough force to remove the screw.

    http://www.youtube.com/watch?v=SMrDYJvY0Ts
     
  7. Anton

    Anton Administrator Staff Member

    Yep the first post was missing, Bboyphil edited the post and it got put into moderation. All good now!
     
  8. Bboyphil

    Bboyphil New Member

    Screwdriver didn't work. I don't want to spend any money on fixing something like this.. Please is there any other way?
     
  9. Bboyphil

    Bboyphil New Member

    Nevermind, this is just **** right now the clutch cover broke apart from anton telling me to pop it with a screwdriver now it doesn't work anymore.
     
  10. crassius

    crassius Well-Known Member

    next time use an impact driver on those screws
     
  11. Big Red

    Big Red Active Member

    Pay for postage and I'll send you a free cover and screws. I must have at least 10 good used ones in my shop. PM me and we'll set it up.
    And it might be the wrong chain. A chain from one chinese factory doesn't always fit a drive sprocket (cog?) from another chinese factory. And they don't check before putting it in the box. CHINESE QUALITY CONTROL. LOL. Try getting the next size smaller chain from a good vender. This has worked for me in the past. My friend bought new chain and I was trying to set it up on his bike. It kept binding up on the drive sprocket. I finally just put on a used, but still good, smaller chain from my used stuff. Worked great and he is still ridind it.
    Some might say grind the drive sprocket to make the chain fit better. I've tried this, It doesn't work. SORRY BRO, Ya need a new chain. But if it got all twisted up when ya threw it off it's probably too screwed up to use anyway.
    Big Red.
    Anton meant to pop it off with a screwdriver AFTER you got the side cover off.
     
    Last edited: Jul 24, 2013
  12. Jeckler

    Jeckler New Member

    I think what Anton meant was use the screwdriver to get the chain off the sprocket. However, the OP pried against the cover and it looks like the top right mount ear broke off the case. I don't think there's any fixing that. Well, there is, if you can find someone who can sell you a left side crank case and hope it fits. You'll need common wrenches and sockets, the gear puller tool and a gasket kit helps too. I have one out in the garage if you're willing and especially able to give it a shot. Let me know and I'll do a better inspection first. I got it from AZBill and all I needed was the bearings, so I don't know its history.
    BTW: That pin that come out of the center of the sprocket? That's normal.
     

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  13. Big Red

    Big Red Active Member

    Yup, Shoulda looked at the pic. I thought just the side case was broke. He MIGHT still be able to use that case if he can put a spacer between the outer and inner case. AND if he can get a screw to reach all the way through. That will leave a space where you can see the chain but it is mostly cosmetic. Well, THAT and he might get a little oil sling right after lubbing the chain.
    Of course the best is to replace the case. But for a newbie this is quite a big job. Best would be to get matching cases and transfer all the parts to the new (or slightly used,) cases.
    I still think it was a mis-matched chain that caused the problem. I've ran into this more than just a few times. And I think if he gets a good side case, (if needed,) uses spacers where the inner case is gone he can get the clutch to work just fine. Yeah, it's jimmy-rigging, but whatcha gonna do?
    Big Red.
    Hey Sac, Can ya get better pics of the busted case? I THINK spacing will work, but would like better pics to make sure.
     
  14. Fabian

    Fabian Well-Known Member

    This just wouldn't happen if you installed a SickBikeParts shift kit.

    Be done with the rubbish single speed system.
     
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