Advertise on Bikeforums.net



User Tag List

Results 1 to 4 of 4
  1. #1
    Senior Member
    Join Date
    Aug 2006
    My Bikes
    cannondale f600 mongoose crossway 850
    Posts
    77
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    seat post problems

    The seatpost on my '07 Coda Sport gradually disappears in to the seat tube no matter
    how much I tighten the clamp. This clamp is the type that uses an O-ring. Would "post creep" be common for a suspension seatposts? Hope someone can help before I break out the spot welder.

  2. #2
    Senior Member
    Join Date
    Mar 2006
    Posts
    2,014
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    suggestions:
    Bring to LBS and let them figure it out, perhaps the seatpost is too small ect.
    Replace clamp with one that has a bolt, not a QR
    Get a clamp that fits around the seatpost and bolt it shut, keeping the one already on the seat tube. That will keep the seat post from slipping for sure.
    If the seatpost is small your LBS may have a shim for it. You might be able to wrap some aluminized tape, used for heating ducts, around the seatpost.
    2000 Montague CX, I do not recommend it, but still ride it.
    Strida 3, I recommend it for rides < 10mi wo steep hills.
    2006 Rowbike 720 Sport, I recommend it as an exercise bike.
    1996 Birdy, Recommend.
    Wieleder CARiBIKE (folding), decent frame.

  3. #3
    I spit hot fire Diggidy_Dylan's Avatar
    Join Date
    Apr 2007
    Location
    Portland, OR
    My Bikes
    IRO Jamie Roy--Stolen, Specialized SJ, ****-tons of beaters
    Posts
    167
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Take to a bike shop and have them use carbon grease instead of normal grease. Make sure they clean out all the old stuff first.
    Carbon grease has a whole bunch of little balls in it that expand when clamping pressure is induced. All these little balls actually increase surface area while reducing maximum needed clamping pressure.
    My $.02

    P.S. It can be used on anything, not necessarily carbon. Works well in stem/handlebar interfaces too.
    Quote Originally Posted by awc380 View Post
    It's fine if you don't mind your bike bursting into flames, I suppose...

  4. #4
    Healthy and active twobikes's Avatar
    Join Date
    Mar 2007
    Location
    Caldwell, Idaho USA
    My Bikes
    mid-60's Dunelt 10-speed, Specialized Allez Sport Tripple, Trek 7.2 FX
    Posts
    887
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Do you have a reflector with collar mounted on the seat post? If so, move it to just above the seat post clamp and tighted the reflector collar. The extra gripping from the reflector collar should be just enough to stop the slippage.
    Who am I?
    Where did I come from?
    Why am I here?
    Where am I going?

Posting Permissions

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