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rusty seat post stuck in frame

Discussion in 'HOW TO' started by BIKEGUY23451, Mar 31, 2012.

  1. BIKEGUY23451

    BIKEGUY23451

    Joined:
    Mar 21, 2012
    Messages:
    6
    Hi there I just got ahold of an old Columbia cruiser and the bike was sitting out in weather for along time. I tried every trick I now and eventually broke the seat in the frame now I'm in a pickle. Thanks so much for all the help looking foward to hearing from you.
     
  2. Sinner4

    Sinner4

    Joined:
    Nov 24, 2009
    Messages:
    1,029
    Location:
    Boise ID
    Can you weld? I cut mine out (Seat Tube) and re-welded a 1 inch conduit in place of the old, and then you can uses a modern 26.2 seat post.

    [​IMG]

    [​IMG]
     
  3. deorman

    deorman

    Joined:
    Apr 20, 2009
    Messages:
    10,413
    Location:
    Fairfax, VA
    Is the post broken off below the clamp area? If it's the 13/16" hollow type some here have had success cutting it vertically with a hacksaw blade. If it's a really old one with the solid post and shims, you may be able to drive out one of the shims with a dull chisel or punch. If all else fails, you can probably find an automotive machine shop who' ll drill it out for 30 bucks or so.
     
  4. Uncle Stretch

    Uncle Stretch Moderator

    Joined:
    Feb 9, 2008
    Messages:
    6,160
    Location:
    Pearland,Texas
    I think most of the ideas anybody has come up with are posted here by Cman, in the how too manual.

    viewtopic.php?t=310
     
  5. streetpirate

    streetpirate

    Joined:
    Jun 20, 2011
    Messages:
    343
    this question seems to come up a lot. I made a slide hammer out of some allthread and some washers ground down to fit in the frame tube, put them in from the bottom bracket and captured with the allthread. I put a big washer at the top and used an old jeep hub for the weighted slide part of the slide hammer. This was after I had torn the post off inside the frame, while soaking it for days in penetrating lube and trying to twist it out with a huge pipe wrench
     
  6. Sinner4

    Sinner4

    Joined:
    Nov 24, 2009
    Messages:
    1,029
    Location:
    Boise ID
    I have tryed the slide hammer, a body shop slide hammer welded to a post, didnt work, The water trick soak and no work, wd-40 for a year on a high dollar road bike and no work. Heat on steel frame and steel post and no wrok. I welded a 3 ft cheater bar on several steel posts and that worked. I haven't used the PB Blaster stuff.
     

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