How to Remove a Seat Post Stuck in Bike Frame

[@wimuijtenhaak8696]

Looks great doing this on bare feet. Always take care of safety precautions when starting DIY activities. You don't want to end up at first aid section of the nearest hospital. But I'm glad you fixed it!

[@jp93309]

Hard work paid off! I took it my local bike co-op to put it upside down in a vise and used the frame as the lever. Tough going!

[@Desi365]

4:00 that sounds so much like something else, lol. Anyways, persistence and resolve triumph over hardship, it’s an excellent feeling, congratulations.

[@lawrencep7068]

So satisfying to watch, holding the bike frame up on the pier like he caught a prize fish

[@wildthinair]

Put the seat tube in a vice and use the whole frame as the lever.

[@ferventheat]

The thermal expansion of aluminium is larger than steel, so hot will make it tighter. The heat would increase the reaction rate of the vinegar and rust, but that's about it. I would try a freeze spray can after the heating.

[@dhanushraj2813]

Thank you sir it really works

[@gregorio8929]

you are my new hero

[@timlawson810]

Flip the frame and lube it from the bottom bracket hole

[@andyprendergast2617]

when using heavy grips outside- have grips closer to the frame.

[@maximinoestalilla1852]

Use brake fluid to loosen rust.. the best way I have tried.

[@kristxw5210]

mixing transmission fluid and acetone works even better, but way messier

[@cancelik]

The frame is steel? or aluminum?

[@bentimby]

Steel

[@cancelik]

Yeah this is why it stucked so hard... steel + aluminum = galvanic corrosion.@@bentimby

[@ScreamingEagleFTW]

aluminum doesnt expand under heat? My understanding is that aluminum expands at twice as much as steel am I wrong?

[@bentimby]

I was under the impression that steel expands under heat, aluminum doesn’t.

[@ScreamingEagleFTW]

@@bentimby aluminum expands twice as much as steel does when heated. also shrinks twice as much when cooled.

[@bentimby]

@@ScreamingEagleFTW Gotcha. Thanks for that. I believe what's happening in any case with this method is expansion and contraction of both materials so that it begins to separate.

[@ScreamingEagleFTW]

@@bentimby I am convinced that is correct. The way to remove an aluminum seatpost in my opinion is to heat the post to about 300 degrees measured at the seat tube at the point where the post is deepest. Apply heat to the top of the post not the tube. Use a laser thermometer and when the seat tube gets to 300 stop heating and let it cool back down to 100 and then repeat that whole process about 5 times. Then after it cools to 100 attach a junk seat and clamp the seat in the vise or special jig and try to turn the frame with force at the top tube and down tube. Once it moves a tiny bit just move it back and forth and apply penetrating oil (atf/acetone 50/50). Never turn it while it is still hot. Its the cycling of heat that causes the seatpost to break the corrosion bond from the seat tube.

[@Paul58069]

@@ScreamingEagleFTW I think you are on to something. I suggest to try to impact-turn the saddle post first. But if it doesn' t budge, heatcycles might be the ticket. Why 300 degrees btw ?

[@willrault7414]

Merci 👍👍👍👍👍

[@cancelik]

That feeling when it s get out... 🥰🥰🥰

[@johncarlodelacruz7079]

my voice when im going to bust. fuck yeah!

[@Mantis858585]

I just uploaded a video how to remove a stuck seat post using power tools. KZbin figures I needed to watch more videos on seat tubes. 😆

[@garyp1432]

A bunch of vinegar?

[@bentimby]

Could be worth trying? Let me know how it goes!

[@abinrajr3010]

👏👏👏👏👏

[@cstrike105]

Can I use wd 40?

[@bentimby]

If it’s what you’ve got then go for it, but I don’t think it will be as effective as penetrating oil. If it’s not too stuck maybe it will work though! Try the other techniques as well though.

[@fairulrani]

👏👏👏

[@abzkiedzai5686]

W-40 is the best😁

[@bentimby]

There’s a lot of debate around WD-40 and how effective it is as a lubricant (look it up on Reddit :) Personally, I think it’s overhyped and doesn’t work well for this application because it doesn’t go as deep into the corrosion as penetrating oil. But I’m glad you like it!

[@adrianoadriano4730]

👌👍