rec.sport.unicycling · Public discussion

Re: Seat clamp help needed

Started by Into the blue · · Last activity · 5 posts · 311 views

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rec.sport.unicycling
Published
26 May 2008
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26 May 2008
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Into the blue
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  1. Original post
    Into the blue
    Archived post
    #1

    Okaaaay...
    After much arsing about with the seatclamp, I have discovered that's
    not the problem.
    The post isn't twisting in the frame.
    It's twisting where it joins the saddle clamp part.
    I've stripped everything down so now I just have my seatpost in my
    hand, but for the life of me, I cannot see how these two parts (the
    black post and the lower half of the saddle clamp) are connected.

    Again, any advice here would be greatly appreciated.

    +-------------------------------------------------------------------+
    |Filename: twist.jpg |
    |Download: http://www.unicyclist.com/attachment/26864 |
    +-------------------------------------------------------------------+

    --
    Into the blue

    ok you primitive screwheads, listen up! you see this? this... is my
    boomstick!





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  2. kington99
    Archived post
    #2

    They're glued together. Drill a hole through the post just below the
    join and stick a bolt through it. There have been many failures at this
    point, and this is the solution Roger at udc uk uses.

    --
    kington99

    Dave

    - what a thoroughly post-modern subversion of the cycling genre -
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  3. Into the blue
    Archived post
    #3

    Cheers Kington, that's what I figured I had to do.
    I was just a bit worried about drilling and compromising the strength
    of the seat post.
    Many thanks.
    I'll let you know how the surgery goes.

    --
    Into the blue

    ok you primitive screwheads, listen up! you see this? this... is my
    boomstick!





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  4. kington99
    Archived post
    #4
    Into the blue said:

    Cheers Kington, that's what I figured I had to do.
    I was just a bit worried about drilling and compromising the strength
    of the seat post.
    Many thanks.
    I'll let you know how the surgery goes.

    I've not heard of any failing after this treatment, stick to maybe a 5
    or 6mm bolt, it will decrease the driling required and still would take
    an enormous force to shear by twisting the saddle. If you want it to
    look really good, get a sleeved nut used on seatpost clamps so you get
    a nice allen head on each end, instead of a bolt and nut sticking out
    one side.

    --
    kington99

    Dave

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  5. Into the blue
    Archived post
    #5

    Job done.
    Drilled and tapped through one side and used a spare bolt from the
    garage.
    I might try and find a sexy black one another day.
    I didn't go through the seatpost completely as there is a wire spring
    that sits in the centre of the post, and knowing my luck I would have
    drilled right through it.
    Anyway, it seems to be holding fine.
    Time to take it out for a test ride.

    +-------------------------------------------------------------------+
    |Filename: post.jpg |
    |Download: http://www.unicyclist.com/attachment/26870 |
    +-------------------------------------------------------------------+

    --
    Into the blue

    ok you primitive screwheads, listen up! you see this? this... is my
    boomstick!





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