Results 1 to 6 of 6
  1. #1
    mtbr member
    Reputation:
    Join Date
    Oct 2010
    Posts
    68

    double seat post clamp????

    I hope I am posting this in the right section
    I am looking for a double seatpost clamp to fit my black market 357 frame
    the post size is 27.2mm and the od on the frame is 30.0mm
    I cant seam to find a double seatpost clamp in that size
    I have asked at my lbs and searched online
    I cant seem to come up with one
    the single clamps slip on long rides
    I have already broken 2
    this is a dual purpose bike for me
    I slam the seat and use it for dj and urban rideing
    but I also commute on it and will do long rides on the weekends where I need my seat higher
    any and all suggestions would be appreciated

    I do plan on building another bike in the futer and keeping this one as a dj bike but untill then I would like to have a seat that wont move when it is raised

  2. #2
    mtbr member
    Reputation: JonathanGennick's Avatar
    Join Date
    Sep 2006
    Posts
    4,851
    Would Surly's Constrictor help? It's available in 30.0mm size.

    http://surlybikes.com/parts/constrictor/

  3. #3
    mtbr member
    Reputation:
    Join Date
    Oct 2010
    Posts
    68
    that is a beefy single clamp but I just dont know I will use it as a last resort
    I was even thinking of buying two single clamps and haveing my friend weld them together
    but it seems like there should be a simpler solution

  4. #4
    T.W.O.
    Reputation: mimi1885's Avatar
    Join Date
    Aug 2006
    Posts
    8,010
    Have you tried carbon prep or ti prep. I had similar problems and after putting the carbon prep on my post it cured the problem.

  5. #5
    mtbr member
    Reputation:
    Join Date
    Jan 2010
    Posts
    582
    are you referring to those types of clamps I've seen on Cannondale's urban bikes (bad-boy and hooligan)? I dont know what size they are but I think their seat post sizes are 31.6, I dont know if they have 27.2 versions.


  6. #6
    mtbr member
    Reputation:
    Join Date
    Oct 2010
    Posts
    68
    that style or the oldschool bmx style which is the same but without being as slim and trim

Posting Permissions

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