rusty seat post stuck in frame

[BIKEGUY23451]

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.

 

[Sinner4]

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.

 

[deorman]

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.

 

[Uncle Stretch]

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

 

[streetpirate]

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

 

[Sinner4]

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.