Page 1 of 2 1 2 LastLast
Results 1 to 25 of 26
  1. #1
    mtbr member
    Reputation: dcc1234's Avatar
    Join Date
    Nov 2008
    Posts
    156

    what the heck is this-- Seatpost

    Just got an extra long carbon seatpost in the mail with a bit of setback. Its probably me but-- this seatpost doesn't seem to have the normal bits for attaching a seat to it.

    What is this called and how do I install it? TIA for any light you can shed.
    Attached Thumbnails Attached Thumbnails what the heck is this-- Seatpost-seatpost.jpg  


  2. #2
    lamer
    Reputation: llamma's Avatar
    Join Date
    Apr 2012
    Posts
    294
    monolink clone? MONOLINK SET-UP - YouTube

    It might just be a side-clamp design, but it's a little hard to tell from the photo

  3. #3
    local trails rider
    Reputation: perttime's Avatar
    Join Date
    Aug 2005
    Posts
    11,834
    Take a seat ... in your hand. And see what happens when you try to mate it with the top end of the post.

    Or contact the people who make/sell it.
    FLYXI

    "it IS possible that you are faster or slower than anybody else who is having at least as much if not more or less fun"

  4. #4
    AZ
    AZ is offline
    banned
    Reputation: AZ's Avatar
    Join Date
    Apr 2009
    Posts
    19,998
    Uhmmmmmm, Got any kids? They are usually pretty good at fingering out complicated stuff.

  5. #5
    mtbr member
    Reputation:
    Join Date
    Apr 2010
    Posts
    1,355
    The rails get clamped by the tangs on the silver endcaps. Loosen the screw, insert the seat rails as shown below, then tighten the screw.
    Attached Thumbnails Attached Thumbnails what the heck is this-- Seatpost-seatpost-copy.jpg  


  6. #6
    mtbr member
    Reputation: Pau11y's Avatar
    Join Date
    Oct 2004
    Posts
    5,683
    Is it me, or...really!?!?
    Naysayers never apologize. Critics go to their grave thinking everyone else is wrong.
    ╭∩╮( . )╭∩╮

  7. #7
    mtbr member
    Reputation: Magilla_Guerrilla's Avatar
    Join Date
    Jun 2010
    Posts
    253

  8. #8
    mtbr member
    Reputation: dcc1234's Avatar
    Join Date
    Nov 2008
    Posts
    156
    Thx Car_Nut, et.al

    Well, that was easy!
    Last edited by dcc1234; 09-03-2012 at 12:48 PM. Reason: did it

  9. #9
    mtbr member
    Reputation:
    Join Date
    Apr 2010
    Posts
    1,355
    Glad it worked out! Let us know how you like it.

  10. #10
    mtbr member
    Reputation: dcc1234's Avatar
    Join Date
    Nov 2008
    Posts
    156
    I love it. This type of seatpost looks simpler, lighter and easier to adjust than the 'old school' kind I am used to.
    My 19" 29er is bit small for me (6'0) so I hope my knees will prefer this seatpost's setback too.

  11. #11
    bt
    bt is offline
    mtbr member
    Reputation:
    Join Date
    Nov 2007
    Posts
    1,197
    you know where the other end goes right?

  12. #12
    mtbr member
    Reputation:
    Join Date
    Oct 2005
    Posts
    752
    Quote Originally Posted by bt View Post
    you know where the other end goes right?
    LOL

    @dcc1234, you obviously did not know what you bought, so here's another word of advice: These kind of posts with a rotating head have a tendency to slip if you do not put enough torque on the saddle clamp bolt. You will not be the first rider to suddenly have your saddle pointed at the sky or the ground while riding... If that happens once, the little teeth that keep the post head from rotating wear out big time and it will happen more often, requiring even more torque on the bolt to stop it.

    The bad thing is, it's hard to figure out how much torque is enough and not too much, which poses a risk of damaging the bolt or the threads.

    This is why I keep away from seat posts with this design... It's a little too late for that for you, so be sure to tighten the bolt according to the torque the manufacturer advises.

  13. #13
    mtbr member
    Reputation: Magilla_Guerrilla's Avatar
    Join Date
    Jun 2010
    Posts
    253
    You are also limited to saddles with small, round rails. No carbon rails or oval / rectangle type rails. Anything other than round will not get required contact to stay put.

  14. #14
    mtbr member
    Reputation: ms6073's Avatar
    Join Date
    Aug 2012
    Posts
    133
    Quote Originally Posted by Magilla_Guerrilla View Post
    You are also limited to saddles with small, round rails. No carbon rails or oval / rectangle type rails. Anything other than round will not get required contact to stay put.
    Not true, Bontrager has a seatpost with nearly identical parts and offers a replacement seatpost head for saddles with oval/carbonr rails.

  15. #15
    Basement Dweller
    Reputation: JosefFritzl's Avatar
    Join Date
    Sep 2009
    Posts
    13
    Those 29-er specific posts are a PITA!

  16. #16
    Nouveau Retrogrouch SuperModerator
    Reputation: shiggy's Avatar
    Join Date
    Dec 1998
    Posts
    48,034
    Quote Originally Posted by JeroenK View Post
    LOL

    @dcc1234, you obviously did not know what you bought, so here's another word of advice: These kind of posts with a rotating head have a tendency to slip if you do not put enough torque on the saddle clamp bolt. You will not be the first rider to suddenly have your saddle pointed at the sky or the ground while riding... If that happens once, the little teeth that keep the post head from rotating wear out big time and it will happen more often, requiring even more torque on the bolt to stop it.

    The bad thing is, it's hard to figure out how much torque is enough and not too much, which poses a risk of damaging the bolt or the threads.

    This is why I keep away from seat posts with this design... It's a little too late for that for you, so be sure to tighten the bolt according to the torque the manufacturer advises.

    I avoid them for the same reasons. Reminds me of the cheap-@** posts in the past that never stayed level. The foo-foo ones I have tried are no improvement
    mtbtires.com
    The trouble with common sense is it is no longer common

  17. #17
    mtbr member
    Reputation: dcc1234's Avatar
    Join Date
    Nov 2008
    Posts
    156
    Thx JeroenK for safty tips-- that is huge-- I'll be having my LBS check out the torque. It sounds like this is not an improvement over traditional seatpost design.
    Last edited by dcc1234; 09-04-2012 at 12:19 PM.

  18. #18
    mtbr member
    Reputation: Magilla_Guerrilla's Avatar
    Join Date
    Jun 2010
    Posts
    253
    Quote Originally Posted by ms6073 View Post
    Not true, Bontrager has a seatpost with nearly identical parts and offers a replacement seatpost head for saddles with oval/carbonr rails.
    Well I guess if you completely change the hardware you could use a different saddle.

    Pointless, and doubtful it would work on a generic copy post, but true.

  19. #19
    mtbr member
    Reputation: smilinsteve's Avatar
    Join Date
    Jul 2009
    Posts
    6,769
    Quote Originally Posted by JeroenK View Post
    LOL

    @dcc1234, you obviously did not know what you bought, so here's another word of advice: These kind of posts with a rotating head have a tendency to slip if you do not put enough torque on the saddle clamp bolt. You will not be the first rider to suddenly have your saddle pointed at the sky or the ground while riding... If that happens once, the little teeth that keep the post head from rotating wear out big time and it will happen more often, requiring even more torque on the bolt to stop it.The bad thing is, it's hard to figure out how much torque is enough and not too much, which poses a risk of damaging the bolt or the threads.

    This is why I keep away from seat posts with this design... It's a little too late for that for you, so be sure to tighten the bolt according to the torque the manufacturer advises.
    It looks to me like there are no little teeth to stop the rotation. It must just be a friction hold; as you tighten the (single) bolt the wedged end pieces push tighter into the barrel at the top of the post?

  20. #20
    mtbr member
    Reputation: ms6073's Avatar
    Join Date
    Aug 2012
    Posts
    133
    Quote Originally Posted by Magilla_Guerrilla View Post
    I guess if you completely change the hardware you could use a different saddle.
    Actually while the default image in that link on the Bontrager site is of the entire clamp assembly, Bontrager also sells just the clamps. I know this first hand as I had to replace the clamps on the seat post clamp on my open mold time trial frame in order to mount a Fizik saddle with braided carbon rails.

    Quote Originally Posted by smilinsteve View Post
    It must just be a friction hold; as you tighten the (single) bolt the wedged end pieces push tighter into the barrel at the top of the post?
    Yes, and once torqued (typically 5nm is adequate), unless you add a spring as in the image on the Bontrager site on the bolt between the two clamp/wedges, it will take something like a rubber mallet to get the apart. While I have had no issues on the road, I would be hesitant to use a seat post with that clamp design for off-road use for the reasons already mentioned.

  21. #21
    mtbr member
    Reputation:
    Join Date
    Oct 2005
    Posts
    752
    Quote Originally Posted by smilinsteve View Post
    It looks to me like there are no little teeth to stop the rotation. It must just be a friction hold; as you tighten the (single) bolt the wedged end pieces push tighter into the barrel at the top of the post?
    Hard to see, but if that is the case, it's indeed a slightly less vulnerable construction. That said, it's probably still a case of torqueing (that's probably spelled wrong..?) the hell out of it. A friend of mine has a way of tightening bolts carefully. You know, "tight is tight enough". His Specialized Command post (same mechanism) did enduce a lot of cursing...

  22. #22
    mtbr member
    Reputation: dcc1234's Avatar
    Join Date
    Nov 2008
    Posts
    156
    op here-- FWIW, the seat post I bought has springs inside like the Bontrager, uses a 6mm allen wrench and the torque spec is 16NM.
    Attached Images Attached Images  

  23. #23
    mtbr member
    Reputation:
    Join Date
    May 2012
    Posts
    171
    Quote Originally Posted by dcc1234 View Post
    op here-- FWIW, the seat post I bought has springs inside like the Bontrager, uses a 6mm allen wrench and the torque spec is 16NM.
    Same? match saddle with round joint.
    Attached Thumbnails Attached Thumbnails what the heck is this-- Seatpost-sp4-1-09-05-16-39-59-.jpg  

    what the heck is this-- Seatpost-sp4-2-09-05-16-39-59-.jpg  

    what the heck is this-- Seatpost-sp4-09-05-16-39-59-.jpg  


  24. #24
    mtbr member
    Reputation: smilinsteve's Avatar
    Join Date
    Jul 2009
    Posts
    6,769
    My butt hurts just looking at that saddle.

  25. #25
    local trails rider
    Reputation: perttime's Avatar
    Join Date
    Aug 2005
    Posts
    11,834
    You sit too much

    "it IS possible that you are faster or slower than anybody else who is having at least as much if not more or less fun"

Page 1 of 2 1 2 LastLast

Posting Permissions

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