chain getting bunched up... (help)

Discussion in 'Frame Mounted Engines' started by crabdance, Jul 12, 2008.

  1. crabdance

    crabdance Member

    Well last night I tried to start my engine to check and see if a carburetor fix worked. It didn't start on the first time and when I let out the clutch on the second try the back wheels locked up. I carried the bike home on the front wheel, pulled off the clutch cover and had a look. I saw that the chain and bunched up a little left of top center. After working with it for a while, I managed to get it back to the right place again. I didn't take it out again because it was dark by that time.

    This morning (a few minutes ago), I took my bike out and wanted to see if it would start and to check my carburetor fix worked. Well, I let out on the clutch to start and you guessed it!... The wheel locked up again. I brought it back home on the front wheel again and opened the clutch face plate. The chain has bunched up in the exact same place as the time before. I tried to move the back tire to force the kink out like last time but it's not working this time. I'm afraid of the amount of force it's going to take to get the kink out.

    Has this happened to anyone before? Does anyone know what this means? I would really appreciate any help on this. It's never happened to me before so I don't have any idea of what's going on. Can anyone tell me how to get the kink out other than moving the wheel? How can I stop this from happening again?

    Thanks in advance for all the help,
    cd
     

  2. srdavo

    srdavo Active Member

  3. crabdance

    crabdance Member

    Thanks srdavo, I will check out the chain tension. I think it's a little loose. Thanks you for the link too.
     
  4. crabdance

    crabdance Member

    ok.. I feel dumb but I found out what the problem is. My back rim is bent all to heck. That's why my chain kept messing up. Now I have to save up my pennies to get a new 26 inch rim (no idea what they cost)

    Thanks for the help everyone. At least I know what the problem is now.

    cd
     
  5. Scottm

    Scottm Guest

    Use a socket and ratchet to turn the drive sprocket back. Doesn't take much force to back the kink out.
     
  6. crabdance

    crabdance Member

    Thanks Scott!... I popped it out with a flat head screwdriver after I loosened up my chain tensioner.
     
    Last edited: Jul 15, 2008
  7. crabdance

    crabdance Member

    new wheel now

    Ok, I have a new wheel on the back now and my chain still keeps coming off I had to put it on 4 times yesterday and finally gave up on it. The wheel is not bent but I suppose it's possible it's out of alignment.

    The last time the chain came off, I was pedaling the bike to get it up to speed to pop the clutch and before I got to pop the clutch the chain jumped off the sprocket and hung up.

    I'm really getting frustrated with this. Does anyone have any ideas?

    thanks,
    cd

    edit: I think that the chain is more loose than it should be
     
    Last edited: Jul 20, 2008
  8. srdavo

    srdavo Active Member

    with your chain on.....
    roll your bike, with the clutch lever pulled in.....
    walk with it....
    watch your chain.....
    this will tell you a lot.
     
  9. Scottm

    Scottm Guest

    Follow Dave's instructions. Most likely your chain is too long and has too much slack.
     
  10. crabdance

    crabdance Member

    Thanks Dave and Scott. When I got it fixed the last time yesterday, I rolled it with the clutch in and the master link came off. Now the chain is just dangling there. Jim gave me some extra chain and I will see if it has a master link in it that I can use or maybe the whole chain.

    Thanks for all the help. Don't know what I would do without you all,
    john
     
  11. crabdance

    crabdance Member

    everything ok

    My neighbor helped me put my chain back together and everything is happy now (including me). I now have a new master link, my back wheel has been aligned and my motor is now stable thanks to tightening up some nuts.

    Long story short. It's working now and I'm happy about that. I only made a short trip with it but I'm going to make a longer one in just a little while. Keep you fingers crossed.

    cd
     
  12. Tamerz

    Tamerz New Member

    I'm having the exact same problem. I reduced the slack on my chain and that also seemed to help. But now the chain is trying to come off the rear sprocket. What steps did you use to align it better?
     
  13. crabdance

    crabdance Member

    Take a look from the back of your bicycle and see if the chain and sprocket are aligned. They probably are not (mine wasn't anyway). What I did was get a tape measure out and measure the distance from the rim to the bike frame on both sides. I wanted to make them equal (they were not) So I loosened on side of the tire bolt and pulled the tire over to where both sides would be equal from rim to frame. Then I tightened it back up. That's all I did and it made a world of difference.

    Hope this helps.
    cd
     
  14. Tamerz

    Tamerz New Member

    Well they weren't lined up for sure. The stupid chain tensioner was causing the problem. Like other people it was getting pulled inward. I ended up going and getting new bolts and nuts to hold it on. I was able to get it lined up and tightened down and able to ride for the first time! This thing cracks me up. Thanks for the help everyone.
     
  15. Aaron

    Aaron New Member

    you dont really want your chain sagging i think its sappose to be 1 inch clearance not totally positive but you wont want it to tight.
     
  16. crabdance

    crabdance Member

    Way to go Tamerz, Now you are ready to go. And you know what to look out for the next time it feels like that.

    cd
     
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