Advertise on Bikeforums.net



User Tag List

Results 1 to 8 of 8

Thread: timing chain

  1. #1
    nice-n-easy
    Join Date
    Feb 2008
    Location
    Culver City, CA
    My Bikes
    Cannondale road tandem
    Posts
    12
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    timing chain

    the tension on our timing chain is not consistent - I read Sheldon Brown's article on this (you need to loosen chainring bolts and tap on the chain until chainring is centered) but haven't been successful with this tedious process. As long as the tension is never too great is it really an issue?

  2. #2
    Senior Member zonatandem's Avatar
    Join Date
    Dec 2003
    Location
    Tucson, AZ
    My Bikes
    ariZona carbon fiber tandem & single
    Posts
    9,930
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Not an issue.
    Rotate pedals backwards and watch timing chain. At some point it will be tighter/looser than in others.
    Too tight and chain can snap; too loose and it can bounce off. Settle for the happy medium.

  3. #3
    hors category TandemGeek's Avatar
    Join Date
    Jan 2002
    Posts
    7,150
    Mentioned
    0 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by paulandyael View Post
    .... As long as the tension is never too great is it really an issue?
    The only potential problem you can run into with sync chain tension is having it too loose, which could lead to an unintentional derail / drop of the chain at an inopportune time.

    As far as getting it too tight, you would have to use a breaker bar on the eccentric to put the chain under anything that comes even close to the amount tension that your average captain generates through the pedals on a normal ride, never mind on strenuous double-digit climbs.

    Bottom Line: Close enough is good enough as long as there isn't too much slack.

  4. #4
    Rod & Judy gracehowler's Avatar
    Join Date
    Jun 2009
    Location
    Montrose, CO
    My Bikes
    Specialized S-works e-5, Davinci joint venture, Specialized Vienna Commuter
    Posts
    396
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    +1, as a mechanic, one learns chains are not "round", they always have tight and loose
    R&J

  5. #5
    rebmeM roineS JanMM's Avatar
    Join Date
    Jan 2006
    Location
    Indiana
    My Bikes
    RANS V3, RANS V-Rex, RANS Screamer
    Posts
    11,388
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by paulandyael View Post
    the tension on our timing chain is not consistent - I read Sheldon Brown's article on this (you need to loosen chainring bolts and tap on the chain until chainring is centered) but haven't been successful with this tedious process. As long as the tension is never too great is it really an issue?
    I was able to get to a higher level of 'close enough' by using that technique.
    RANS V3 (steel), RANS V-Rex, RANS Screamer

  6. #6
    Senior Member
    Join Date
    Nov 2006
    Posts
    787
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    On my Santana with Shimano Ultegra crankset there is noticeable tightening / loosening while rotating the cranks. I was suprised on the Calfee with FSA crankset / rings there is no detectable tightening / loosening. I am not sure if it is a function of the frame, crankset, rings or all three but it is noticeably improved on the Calfee.

  7. #7
    nice-n-easy
    Join Date
    Feb 2008
    Location
    Culver City, CA
    My Bikes
    Cannondale road tandem
    Posts
    12
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    thanks everyone!

  8. #8
    Senior Member
    Join Date
    Aug 2008
    Posts
    92
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by jnbrown View Post
    On my Santana with Shimano Ultegra crankset there is noticeable tightening / loosening while rotating the cranks. I was suprised on the Calfee with FSA crankset / rings there is no detectable tightening / loosening. I am not sure if it is a function of the frame, crankset, rings or all three but it is noticeably improved on the Calfee.
    I noted the same thing with my Calfee / FSA compared to my Santana Rio with Shimano / Ultegra.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •