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Re: Increased Chain tension

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  • Jose
    Interesting setup. Has anyone tried using rollers that are used on recumbents? Or a chain tensioner used for singlespeeds with vertical dropouts? Regards, Jose
    Message 1 of 1 , Mar 13 3:38 PM
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      Interesting setup.

      Has anyone tried using rollers that are used on recumbents? Or a chain
      tensioner used for singlespeeds with vertical dropouts?

      Regards,

      Jose

      (Sent via Sprint Treo755p, so please do not reply with attachments larger
      than 250k)


      ...... Original Message .......
      On 13 Mar 2009 07:24:33 -0000 rootsradicals@yahoogroups.com wrote:
      >There is 1 message in this issue.
      >
      >Topics in this digest:
      >
      >1a. Re: Chain Length Question
      > From: davidmoskovitz
      >
      >
      >Message
      >________________________________________________________________________
      >1a. Re: Chain Length Question
      > Posted by: "davidmoskovitz" damosk@... davidmoskovitz
      > Date: Thu Mar 12, 2009 1:03 pm ((PDT))
      >
      >I saw a nice mod in the xtracycle forum to increase chain tension, and I
      tried it myself with excellent results. A picture is really the easiest
      way to describe it:
      >
      >http://tinyurl.com/baxjmk
      >
      >http://www.flickr.com/photos/davidmoskovitz/2375136151/
      >
      >Run a longish spring from the lower rear deraileur pulley to the rear
      bridge of the Free Rad, or BD. I did this by drilling a small hole in the
      derailleur cage behind the pulley, in an area that doesn't interfere with
      the chain. I used an M2 or M3 bolt to attach a Sturmey/Archer hub-gear
      barrel adjuster and chain, becuase it was handy, and becasue it provides an
      easy way to adjust the length of the spring or to detatch it altogether.
      Then I used a p-clamp or old tail-light bracket to attach the spring near
      the rear bridge. I ended up buying a handful of springs, but in the end I
      used a fairly stout spring.
      >
      >It works very well. There seems to be enough distance between the
      derailleur cage and the rear bridge so that the lateral motion of the
      derailleur cage is not significantly impeaded by the spring.
      >
      >I was almost embarrassed to post the picture, since it prominently
      displays a Tourney derailleur. For what its worth, it was free. It also
      works fine, and seems to soak up more chain than some higher-end rear
      gorillas I've used. There's an XT getting dusty on the mantle now.
      >
      >I'll try to put the photo in the Rootsrad-group-space, too.
      >
      >
      >
      >
      >
      >
      >Messages in this topic (5)
      >
      >
      >
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      radical.
      >
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      >
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      >ride to believe.
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