Need help with stuck seatpost

[ElPablo]

Does anyone have a bench vise i could "borrow" to remove a stuck aluminum post from a vintage Bianchi ? I got it to twist a quarter turn with a pipe but no more...

 

[qclabrat]

Does anyone have a bench vise i could "borrow" to remove a stuck aluminum post from a vintage Bianchi ? I got it to twist a quarter turn with a pipe but no more...

Have you tried some penetrating oil?

 

[michael.su]

Does anyone have a bench vise i could "borrow" to remove a stuck aluminum post from a vintage Bianchi ? I got it to twist a quarter turn with a pipe but no more...

This would depend on where you are located. I'm a bit far south of Montreal.

 

[soundz]

 

[Juggernaut]

Have you tried removing the bottom bracket, turning it upside down and spraying penetrating oil down the seat tube?

If seat tube isn't accessible via bottom bracket, turn upside down and spray the oil in through one of the bottle bosses.

 

[Ryan.P]

Heat , pb blast , twist repeat . Spray from all angles ,bb drain hole ,bottle cage mounts

 

[ElPablo]

Have you tried some penetrating oil?

No, only ammonia...

 

[ElPablo]

This would depend on where you are located. I'm a bit far south of Montreal.

Ahaha - I spend half my time in northern NJ

 

[ElPablo]

View attachment 58192
Heat , pb blast , twist repeat . Spray from all angles ,bb drain hole ,bottle cage mounts

I’ll try the PB - but I’d rather avoid heating - unless boiling water would work ?

 

[bonefishjake]

i had this EXACT problem with a seized aluminum seat post in my old steel trek. tried big pipe wrench, PB, and every thing i could think of. none of them individually solved it. eventually i used a combo of heat, a sawzall, and BFH to remove it. good luck man.

 

[qclabrat]

i had this EXACT problem with a seized aluminum seat post in my old steel trek. tried big pipe wrench, PB, and every thing i could think of. none of them individually solved it. eventually i used a combo of heat, a sawzall, and BFH to remove it. good luck man.

yep, hope you don't need the post, in most cases they get pretty trashed.
When bike maintenance mattered to me, I'd often remove the post and quill stems regularly to prevent seizing.

 

[bonefishjake]

yep, hope you don't need the post, in most cases they get pretty trashed.
When bike maintenance mattered to me, I'd often remove the post and quill stems regularly to prevent seizing.

yah, those things have to be removed and hit with a light coat of lube every so often or they just oxidize. if not, that's when things get REALLY ugly.

 

[rottin']

Having similar problem with aluminum imsert stuck in titanium frame.

 

[ElPablo]

Lubing and putting the bike upside down in a bench vise and rotating the frame really works. But it does mangle the seatpost.

The bike was given to me by a childhood friend - we use to ogle over his brother’s Bianchi when we were kids - so it has a lot of sentimental value

 

[Steve Vai]

Go to Tenafly and see Dan. They have a tool for this.

 

[ElPablo]

Go to Tenafly and see Dan. They have a tool for this.

Oh nice - thanks !

 

[soundz]

Sometimes the post welds itself on to the frame so bad that hacksaw is the only option. If this is the case, be prepared for spend a few days + lots of curses cutting it out. Don't ever let @jmanic start hitting it with a screwdriver and hammer.

Since the seat post actually moved in your case, I suspect it can still be twist off.

I grease the hell out of all my seat posts, esp aluminum to steel.

 

[Kirt]

Go to Tenafly and see Dan. They have a tool for this.

@jimvreeland what is the tool?

 

[Magic]

@jimvreeland what is the tool?

 

[Steve Vai]

It's a thing they make in house. It's basically a clamp with handles. It's legit. I want one.