Chain Problem!

Discussion in 'Hubs, Gearboxes, Sprockets and Chains' started by BlueSmoker, Jul 10, 2016.

  1. BlueSmoker

    BlueSmoker New Member

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    My chain is shaking and hits the spokes. How can i fix it? Can i put a metalplate with rounded borders (so the chain don't grabs it) to protect the spokes or will it destroy the chain?
     
  2. sbest

    sbest Member

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    Get the back sprocket spaced further from the spokes and secure your idler to on the bottom chain carefully aligned with the back sprocket.
     
  3. crassius

    crassius Well-Known Member

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    can't picture how this could happen - do you have pics?
     
  4. Venice Motor Bikes

    Venice Motor Bikes Custom Builder / Dealer/Los Angeles

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    The chain shouldn't hit the spokes unless it's too loose.

    Can you post a picture?
     
  5. BlueSmoker

    BlueSmoker New Member

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    Here you got the pictures.
    The chain is wery hard to get perfect imo. Either it is too tight or too loose.

    [​IMG]

    [​IMG]
     
  6. Venice Motor Bikes

    Venice Motor Bikes Custom Builder / Dealer/Los Angeles

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    Here's my next question...

    When you spin the rear wheel, does the chain get tight & then loose as the wheel turns?
     
  7. crassius

    crassius Well-Known Member

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    when chain is both tight & loose, is an indication that sprocket isn't centered in the up/down direction - loosen it up and spin it with a piece of wire or tape on the frame to point to the top of sprocket - at a high spot, put an old drill bit between teeth and smack it hard with a hammer until it is centered all the way around
     
  8. BlueSmoker

    BlueSmoker New Member

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    But do you have an idea about how i can stabilise the chain and prevent it from moving sideways?
     
  9. Kioshk

    Kioshk Active Member

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    A few things: please take more pictures of the INSIDE of the sprocket and one from the rear looking toward the engine so we can see the alignment. The rag-joint is not visible; this must be installed properly; have you "sandwiched" the spokes in the rags? Also, your sprocket is installed dish-in. You can flip it to make it dish-out, and gain about 1/4" clearance. Finally, your tensioner looks like it's fully extended. I recommend that you retract it and remove a link from your chain; re-tention accordingly.
     
  10. Kioshk

    Kioshk Active Member

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    Once you have the chain/rag-joint/sprocket installed properly, this should not be an issue.
     
  11. Chaz

    Chaz Well-Known Member

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    Like Kioshk said, I think you will have to remove a link or two from your chain. It's very common to have to do this and I believe it's your main problem. Assuming that your rear sprocket is aligned properly and running straight and true.

    Also keep in mind that your chain will "stretch" while you are breaking in the engine. After a couple of hundred miles it will stabilize in length so if yours is already too loose it will just get worse until the chain itself gets worn in.
     
  12. crassius

    crassius Well-Known Member

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    a properly fitted & tensioned chain won't move sideways like that
     
  13. maniac57

    maniac57 Old, Fat, and still faster than you

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    Center the sprocket properly. Chain whip is ALWAYS due to too much slack at some point.
    It happens under deceleration and at certain resonant frequencies under acceleration.
    Another cause is the crappy chinese chain you get with typical kits.
    Take a brand new chinese chain and bend it sideways: It will bend a LOT in a 1ft length
    Take a good quality chain like Diamond/etc and it will not bend more than 1/2-3/4 inch per foot.
    Most japanese companies suggest you replace a chain when it bends 3/4 per foot....
    Chinese chains come NEW able to bend 6 inches or more per foot
     
  14. BlueSmoker

    BlueSmoker New Member

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    I got it fixed now. Removed a link and fixed the tensioner. Finally it works fine! :) Thank you for the answears!
     

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