Jserse

Now before I get redirected to the search forums option, i did do this and didn't really find exactly what im looking for. I have read sheldon brown and still can't get this ******* out.

It's a generic IRO seatpost in a mark V frame. I can't seem to get a screwdriver in between the frame and the seatpost to pry it open.

I'm just wondering if anyone has an experience with a similiar situation and can give a few pointers or advice besides what I have found online so far.

Thanks all

carleton

Those crazy fixed gear seatposts!

Try posting here: https://www.bikeforums.net/bicycle-mechanics/

sloaccord

well, what worked for me once, when all of sheldon's stuff didnt work (aside from the hacksawing), was taking the wheels off the bike and having a friend stand on the frame on the patio, so the seat is hanging off the edge of the patio. we put a pos saddle on the post, and i sledgehammered the nose of the saddle. this spun the seatpost and freed it up. maybe it'll work for you.
i am not responsible if you sledgehammer yourself.

norskagent

put a pos seat on the post.
wedge the seat in something fixed, and twist the frame until the post turns.
worked for me -

carleton

So this won't happen again, remember to put a dab of grease on it before you install the next seatpost.

bobbyahines

Before cranking on it hard, use a decent penetrant to break up the friction causing elements. I'm not talking about WD-40 here, go to NAPA and get a can of PB Blaster... Set the frame upright, apply to the top of the seat tube, smack the post liberally with a hammer to work it in, let it set an hour, then use the POS seat and the sledge (or twist method)...

Jserse

yea i greased it when initially installed... then took the bike for granted for nearly 2 years now. after two years of being my beater bike, i guess i deserve this for my negligence towards my seatpost.

thanks for all of the advice everyone

Re-Cycle

Upside down can of dust-off pointed at the post. When its nice n frozen pull it out.

carleton

Really? I've never heard of that one. Sweet.

whix

In order to get mine out i had to use Sheldon's method. i didnt understand it when i first read it but then i finally got it.

i would go with the last method...THE HACK SAW BLADES!

what i did was went to ace hardware and bought the longest blades i could. i then put two blades together and put them in a handle thing for hacksaw blades except it wasn't a hack saw, that way the blades could go all the way in the seat post.

i probably spent 3 days sawing through the walls of the damn seat post and ended up bending my seat post tubing a little from jamming screw drivers in there. but basically all i did was saw down the wall in one spot for a long time and then once i felt i had cut all the way through i tried driving a screw driver between the frame and the seat post to pry it off the wall and managed to get many screw drivers stuck. that didn't do it. it loosed it up a bit but i ended up taking a vice grip and clamping it as hard as i could on the post and hammering on the vice grip untill it slowly worked its way outa there. you could also try to hammer it down a bit to loosen it up.

i hope that made sense if not say so and ill try and re word it or take pictures or something.

Alzonder

I've just ruined a perfect Fuji frame because of the damn seat post
The seat stay cracked and the seat tube deformed. Even though I spend all this time sawing the post inside.
The ******* was way tooo deep.
I should have left it alone as it was very close to desired height.............

doubled

frame upside down, plastic bag around seatpost, pull the bb and pour sprite, preferably coke down the seattube, allow to sit for a day and repeat until post is free. This method frees most corroded aluminum.

DDYTDY

I used PB blaster over a few days from the top and bottom (remove bottom bracket). Then held the flat sided top of the post in a vise with the bike upside down over the vise. Twist........

Alzonder

Here is a successful attempt on a Bianchi frame:
First I cut the top of the seat post off to expose the hole inside,
then I cut 2 slits inside the post with a hacksaw blade (took me 1 hour) all the way to the inside wall of the seat tube.
Now I think one slit would have been enough.


And here is the rotten b*stard .

a b seize

that sounds like it would work...but people that don't know what happens when you use a can of dust-off upside down should be careful not to spray themselves.