Chain Issues

Discussion in 'Motorized Bicycle General Discussion' started by cgoodkind97, Apr 1, 2012.

  1. cgoodkind97

    cgoodkind97 New Member

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    Hi

    I am a newbie and I started building the bike over the summer and gave up! But, a month ago, I started again and finished and got it working. After about one tank, and a few little kinks, the chain started to fall off every time I would ride it! I replaced the chain with a heavy duty #41 chain, but when I'm riding, I hear a knocking sound and then the chain pops off and I skid and can't ride. Thanks in advance for the helpful advice!!!:-||
     
  2. Len455

    Len455 New Member

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    Sounds like your chan is either too loose, too tight, your sprocket is not true or you have an alignment problem.
     
  3. Len455

    Len455 New Member

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    It could be a few things. Either your chain is too loose, too tight, your sprocket is out of true, or you have an alignment problem. If you post a pic of the bije it might help.
    Len455
     
  4. Len455

    Len455 New Member

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    Ignore the first reply. Dumb ipad
     
  5. cgoodkind97

    cgoodkind97 New Member

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    haha thanks so much for the quick reply!! Tomorrow i will check out all those things and try and post a pic!!
     
  6. fredgold52

    fredgold52 New Member

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    First thing I check when my chain starts coming off is the tensioner alignment. It must be pretty close to right as it feeds the chain to the large sprocket.
     
  7. fredgold52

    fredgold52 New Member

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    I was just showing my bike off to a friend. I had to push it backwards. Going backwards takes the chain tensioner out of the mix. My chain came off in less than 3 feet. A closer look showed not very good alignment between the rear sprocket and the front sprocket. And yet there is no problem with the chain coming off when driving forward.

    The conclusion I draw from this little exercise is two-fold. Fold one; I need to improve my sprocket alignment which means messing with the engine mount. Fold two; The idler pulley or roller alignment with the rear sprocket is critical to keeping the chain on.

    OK, fold three; I have no idea what 'folds' are. Instead of saying 'two-fold', why not say, 'two-things'?
     
  8. cgoodkind97

    cgoodkind97 New Member

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    Haha I've been working on the alignment between the two sprockets all day! I tightened all the bolts on the rear sprocket and adjusted the idler pulley to give the right tension. But even with all this, no luck! There is this strange noise which sounds like the chain is slipping, but I'll play with it some more! Thanks
     
  9. Len455

    Len455 New Member

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    Hmmmm... Make sure the chain moves correclty all the way through. If its locking up anywere it could be popping off.
     
  10. Len455

    Len455 New Member

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    Your chain isnt taught is it? It needs some play, about a half an inch
     
  11. cgoodkind97

    cgoodkind97 New Member

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    It has about half an inch of tension, so i don't think that's the issue. My back wheel seems a little misaligned and that might be the issue. Also, on the inside of the casing of the small sprocket, it seems like the chain might be rubbing against it. Could this be why its popping off??
     
  12. rustycase

    rustycase Gutter Rider

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    The problem is probably not in the engine drive casing, unless the motor is out of alignment, a lot.

    Inspect all the issues mentioned above.

    Good luck
    rc

    It's nearly a normal occurance, with a HT running a rag joint.
     

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