interesting chain tensioner idea- Mtbr.com
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  1. #1
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    interesting chain tensioner idea

    i found this pic on a blog and i thought it was an interesting idea for tensioning your chain. But would it really work? I'm going to try it out soon.

    mpap

  2. #2
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    its called a ghost ring, never tried it but that's one "cool" option for chain tension on a vertical drop out.

  3. #3
    All 26.5" all the time!
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    It's well enough known to be included in the SS FAQ on this site.


  4. #4
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    On a bikepath it works

    Quote Originally Posted by mpap89
    i found this pic on a blog and i thought it was an interesting idea for tensioning your chain. But would it really work? I'm going to try it out soon.
    mpap
    Had it for a short time on my converted bike. On rough terrain it would bounce out. Think "chain slap"

  5. #5
    Mtn Biker Machinist
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    Chainstay Clearance

    The biggest problem I have found when trying that method is the chainring needs to sit right where the chainstay is, so it would have to be cut to fit around it, and then joined together again. Wish I could make it work, it would look better than a tensioner!

    Post pics if you get it to work!

  6. #6
    The man who fell to earth
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    Quote Originally Posted by pacman
    On rough terrain it would bounce out. Think "chain slap"
    Actually there was a guy on here a few years back that posted a detailed account of using one of these extensively offroad. He said he tried to shake it out on jumps, hammering stutter bumps and all sorts of riding you would think would shake it out, but he attested it just didn't come out (like you would think it might) and worked quite well. Although I'm sure if the chain tension were allowed to loosen too much eventually it would fall out, but then it's also easy enough to simply move it back a cm or two to tighten it back up on the trail. One of these days I'm gonna try it, neat idea.

  7. #7
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    It works

    I used one on my beater for a while and it worked great. I didn't ride it super hard, but I never had a problem.
    "Welcome to my underground lair...."

  8. #8
    Eric the Red
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    I've run one on my Voodoo a few times, mainly for noveltys sake as I have sliding dropouts.
    I've only had it bounce out once, but my chain tension could have been better. It clears some chainstays, and some it doesn't. It would work good for a no-derailleur two speed set up. Like a to the trail and ride the trail gear. You wouldn't be restricted to the whole rule of four difference as you could use the ghost ring to take up slack on one combination. Just my thoughts.

  9. #9
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    They do work well

    I have one on my chopper, and it works pretty well. I have not, however, taken it offroad too much. For most applications, the ghost ring wants to be right where the chainstay is, so it can be very hit or miss if it will work with your ride.
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  10. #10
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    They're really good if they don't fall off, which is what happens a lot.
    pUt Da LiMe In Da CoKe YoU nUt


  11. #11
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    Looks like the further back you can get it positioned the less able it would be to break free since the tension would be on it from the decrease in chain width from the cog in the rear.

    Not sure if that thory of mine holds true but you would think thats the case.

    Eather way pretty cool, maybe sombody could make and sell a fashonable "ghostring" kit that has several diffrent size rings so you can get the perfect fit and are lightweight and nicly colored.

    not like they will be withstanding any torque like the front ring and the rear cog its just rotating in place and holding a small amount of chain tension so they could be cheap to make and made out of lighter/weaker materials

    Id probably have to make a solid face one (not hollow in the middle like a traditional front ring) and have it be a yellow smily face ^^

  12. #12
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    this 'ghost' ring worked fairly well on one of my bikes until I got it on some jumps. Then it fell out pretty much right away. They do look pretty cool and I can see a perfect application in a chopper/frankenbike.

  13. #13
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    Sparty put a ghost ring on the tall freakbike he brings to Barbie Camp. Doesn't always stay in on the stunts people like to pull with that rig.
    "People like GloyBoy are deaf. They are partisan, intellectually lazy & usually very angry." -Jaybo

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