Suspension Seat Post That Doesn't Wobble?

Discussion in 'Motorized Bicycle General Discussion' started by perkoff, Feb 3, 2010.

  1. perkoff

    perkoff New Member

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  2. azbill

    azbill Active Member

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    all the suspension posts I have tried (3 different makes, all around 20$) have the side to side twist happening
     
  3. professor

    professor New Member

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    I got one from Kmart, has very little side movement. Completely acceptable to me. Sure looks like the one you linked to.
     
    #3 professor, Feb 4, 2010
    Last edited: Feb 4, 2010
  4. perkoff

    perkoff New Member

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    Thanks for letting me know.
     
  5. perkoff

    perkoff New Member

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    Is yours M-Wave brand?
     
  6. Dave31

    Dave31 Moderator
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    #6 Dave31, Feb 4, 2010
    Last edited: Feb 4, 2010
  7. Goat Herder

    Goat Herder Gutter Rider

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    Nice score on the seat post! Would have loved to see more of it?
     
  8. perkoff

    perkoff New Member

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    Looks nice how hard is it to make something like that?
     
  9. Dave31

    Dave31 Moderator
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    Here is some photos I found...

    I used a 1" seat post and a 7/8" seat post, spring, washer and a bolt.

    The 7/8 post slides in the 1" seat post

    the washer butted up against a small piece of 7/8 seat tube welded to the 1" seat tube to hold the washer in place.

    The seat tubes have a channel slotted completely through them for the bolt. This eliminates the seat from wobbling and spinning and to keep the seat from lifting up. Once the bolt is through just cut the head off and grind down so it all slides in the seat tube of the frame.

    A little more to it but that's basically it. I cant seem to find any pics yet of the bolt and slotted channels I made.
     

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  10. Dave31

    Dave31 Moderator
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    What I meant to say was the 7/8 seat tube has a channel slotted the same width as the bolt, the 1" has a hole drilled for the bolt.

    It's hard to see but what I am pointing out is the bolt shaft that goes through the 1'seat tube and through the channel of the 7/8 tube that is inside that cannot be seen.
     

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  11. perkoff

    perkoff New Member

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    Thanks for the instructions, I don't know how I'd make a slot in the tube, what type of tool did you use to do that.
     
  12. Dave31

    Dave31 Moderator
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    I used a drill press then a dremel tool.
     
  13. perkoff

    perkoff New Member

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    Cool, I just took apart the one I ordered and there was a nut on the inside you can tighten with a hex wrench, I tightened it up and it seems to have taken the wobble out.
     
  14. perkoff

    perkoff New Member

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    Nevermind, just put it on my bike and it still wobbles.
     
  15. Dave31

    Dave31 Moderator
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    I've never used or seen the inside of a store bought one so not sure how they are put together. It would seem like something could be done to fix the wobble.

    Wish I had one to see what can be done about it.
     
  16. perkoff

    perkoff New Member

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    I tightened the thing so tight last night to try to get it to stop wobbling that I can't make the thing budge now. The metal tube on the top that goes into the metal tube on the bottom had a piece of plastic with grooves in it attached. You can only slide the top post into the bottom post by lining up the grooves. I'll take pics if I ever get it taken apart again, I need a vice or something to hold it cause my hands aren't doing the trick right now.
     
  17. Dave31

    Dave31 Moderator
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    Here was my first ideal for a sus seat post.

    ummmm, Yep! It was stupid and did not work :oops: But from stupid ideals and failed attempts come good ideals.
     

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