Advertise on Bikeforums.net



User Tag List

Results 1 to 7 of 7
  1. #1
    Senior Member duppie's Avatar
    Join Date
    May 2007
    Location
    Chicago, IL
    Posts
    516
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Replacing a barrel adjuster on a Co-Motion

    This may be a dumb question, but...

    One of the barrel adjuster on the derailleur cable broke. It's a Co-Motion where the the cablestops are brazed on the sides of the headtube. I'd like to replace it with the same one. Does anyone know the brand? They have no markings. I have added a picture of the barrel

    If that doesn't work, can I use any barrel adjuster? Do they all have the same thread?

    Thanks for your help
    Duppie
    Attached Images Attached Images

  2. #2
    PMK
    PMK is offline
    Senior Member PMK's Avatar
    Join Date
    May 2008
    Location
    Royal Palm Beach, Florida
    My Bikes
    2006 Co-Motion Roadster (Flat Bars, Discs, Carbon Fork), Some 1/2 bikes and a couple of KTM's
    Posts
    1,083
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    We had one break on our Roadster.

    I just ordered a couple from Co-Mo.

    PK
    2006 Co-Motion Roadster, flat bars, discs and carbon fibre fork, size 22 / 19
    2006 Ventana ECDM full suspension mountain tandem
    Some single bikes and a couple of KTM's
    And most important, someone special that enjoys them with me (except the KTM's)

  3. #3
    Senior Member joe@vwvortex's Avatar
    Join Date
    Jan 2005
    Location
    Vacaville, CA
    My Bikes
    Santa Cruz Blur LT, Kestrel Evoke, Co-Motion Speedster Tandem
    Posts
    482
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    What broke? Just the o-ring? I hate those adjusters so I just screwed mine in tight and got some jagwire inline adjusters. SO much better and easier to use. If want to replace them - any standard Shimano adjuster will work.
    Administrator and Contributing Editor - Vortex Media Group

  4. #4
    PMK
    PMK is offline
    Senior Member PMK's Avatar
    Join Date
    May 2008
    Location
    Royal Palm Beach, Florida
    My Bikes
    2006 Co-Motion Roadster (Flat Bars, Discs, Carbon Fork), Some 1/2 bikes and a couple of KTM's
    Posts
    1,083
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by joe@vwvortex View Post
    What broke? Just the o-ring? I hate those adjusters so I just screwed mine in tight and got some jagwire inline adjusters. SO much better and easier to use. If want to replace them - any standard Shimano adjuster will work.
    Yes, I have always run them fully seated. The one that failed was damaged when the bike was shipped.

    I was looking at using a Shimano rear mech adjuster, for ours the thread pitch was different I thought.

    PK
    2006 Co-Motion Roadster, flat bars, discs and carbon fibre fork, size 22 / 19
    2006 Ventana ECDM full suspension mountain tandem
    Some single bikes and a couple of KTM's
    And most important, someone special that enjoys them with me (except the KTM's)

  5. #5
    Senior Member
    Join Date
    Feb 2010
    Posts
    202
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Typically (on road bikes at least) barrel adjusters are M5 (standard Shimano size) or, less commonly, M6.

    If yours are M5, I highly recommend a these swank items:

    http://www.kirkframeworks.com/accessories.htm

    They don't come with tension springs though. I have some extra springs that work perfect (taken off a Jagwire barrel adjuster, as I bought a few of 'em just to get the springs)--if you get the Kirk barrel adjusters, just PM me your info and I'll mail the springs to you, gratis.

  6. #6
    just another gosling Carbonfiberboy's Avatar
    Join Date
    Feb 2007
    Location
    Everett, WA
    My Bikes
    CoMo Speedster 2003, Trek 5200, CAAD 9, Fred 2004
    Posts
    8,081
    Mentioned
    3 Post(s)
    Tagged
    1 Thread(s)
    I also had one break off. My problem was getting the broken off part out of the braze-on. I drilled it out with a drill of the M5 adjuster's root diameter. I bought ordinary M5 barrel adjusters at my LBS and replaced them both. The new adjuster pushed out the old thread pieces when I screwed it in. I used anti-seize when I put them in. They work perfectly. I thank the Bicycle Mechanics forum for help in figuring out what to do.
    http://www.bikeforums.net/showthread...arrel-adjuster

  7. #7
    Senior Member duppie's Avatar
    Join Date
    May 2007
    Location
    Chicago, IL
    Posts
    516
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by PMK View Post
    We had one break on our Roadster.

    I just ordered a couple from Co-Mo.

    PK
    That's what I just did. Painless. Sometimes I forget what great customer service Co-Mo has.....

    Thanks for reminding me.
    Duppie

Posting Permissions

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