I knew what I was getting into with this one (bike lived outdoors for a decade) but things got difficult when the post broke off right at the top of the frame.
I’m attempting to use a jab saw to cut sections and peel them inward. But I’m having trouble grabbing some of them.
Any advice? Moral support?
by mister-nice-guy
12 Comments
It’s dead Jim
Holy guacamole batman
Try a torch maybe to warm it up but that thing looks fucked
The best way, in my experience, would have been to drill a hole through the seatpost so that you can stick a beefy rod/screwdriver through the seatpost (to provide twisting force later on). Then you only need to cut a single slit in the seatpost (midway between the holes you drilled), which should give you enough play to be able to twist the seatpost out once the cut is complete. In my experience the difficult part is doing the cut properly and making sure that you’ve cut completely through the seatpost all the way to the bottom of the post, while simultaneously making sure you aren’t cutting into the frame at the top of the tube.
If you’re just making cuts like Sheldon Brown recommends, you end up in the situation you’re in, where it’s very hard to grasp the little seatpost batonnets and twist them out.
Lye will get that pup dissolved and out of there if you want to do a science experiment. You’ll have to look the procedure up yourself. Be careful.
I can’t tell based solely on the photos whether you’re trying to save the frame or the seat post – Godspeed either way 😅
Retire it.
Toss it.
I had to do this and was successful, I had a little bit more exposed seatpost, but it didn’t really make a difference for this method.
Use a threaded rod with a nut at the end, put it down the seat tube and hook it under the lip of the remaining seat post. Then put a wooden dowel of some sort in the seat post to hold the nut in place. Now, depending on how stuck it is, you could either try and yank it out by hooking a slide hammer to the end of the threaded rod, or you might have to fashion some sort of jig that uses the frame to provide leverage. It took me a long time to get mine out and it was a huge mess. But the frame was sentimental to me so I kept working on it. Good luck.
Given what you have left there maybe no13 from this https://www.sheldonbrown.com/stuck-seatposts.html is the last resort available to you. That and patience Dear Paduan !
Lye, takes a long time and you basically have to remove it in chunks.
Sodium hydroxide and dissolve it