Seat post stuck in frame

Bought some plus gas and also some caustic soda on stand by incase few days soaking with plus gas does not work.

Think i am getting somewhere as there is a lot of shit coming out of the seat tube now with every application on plus gas. Hopefully I will have it removed by the weekend.
 
If you use the caustic soda make sure you don't have any anodized parts nearby!

My black Cane Creek headset is now a silver Cane Creek headset.

:oops:
 
02gf74 - is that a saracen kili by any chance?

My 92 kili had a really stuck seatpost but I gave it two weeks of plus gas and it shifted. Really works well.
 
Just had a brain fart momment

has anyone ever used mass heat then rapid freeze?

theory is..monster heat on the post it'self then using plimbers freeze as they do to freeze burts pipes without turning the water off quick freeze

now my idiot way of thinking means that the post will shrink faster than the frame giving a smaller post in a larger seat tube and so might just loosen/being able to remove

or am I just getting old senile and desperate :LOL:
 
Theres some sort of lube available for this,apparently it actually works :? I posted up a link about it somewhere :?
 
8.[Temperature-differential method, which is applicable to any seatpost material: Buy dry ice (solid carbon dioxide, which melts at -78.5° C (- 108° F). If you have access to laboratory supplies, you might also use liquid nitrogen, which is even colder, though its cooling effect is not as great because it boils, forming a shield of gas around itself. Ordinary water ice also might work. Remove the bottom-bracket parts, cork the top of the seatpost if it is open, and with the frame upside-down and a saddle attached to the seatpost, drop chips of (dry) ice or pour liquid nitrogen down the seat tube into the seatpost. Then hold the saddle down on the floor with your feet and twist the frame. You may also warm the seat tube by pouring hot water onto its outside. Wear winter gloves, and socks. Do not touch dry ice, the seatpost or other parts chilled by dry ice or liquid nitrogen. I thank John Newgard for this suggestion. Sheldon's original suggestion follows -- John Allen]
If nothing else works to free up a steel or titanium seatpost, the next-to-last resort is to heat the seat tube up with a hair dryer or propane torch. This should be done with great care so as not to do too much damage to the paint. You should work as fast as you safely can, because you want to heat the seat tube so that it will expand, but if possible you should quickly put the torch down and start pulling on the saddle before the heat works its way through the seat tube and makes the seatpost expand too.

Mentioned above in the link to Sheldon Brown's website but yep, your idea is right.
 
Well i have given up. Its going to my local machine shop a week on Tuesday and they are going to machine it out.

I have tried:
Plus Gas,
Compressed air,
Caustic soda.

None of them have worked so someone else can try.
 
Rick Draper":3h3i55yw said:
Well i have given up. Its going to my local machine shop a week on Tuesday and they are going to machine it out.

I have tried:
Plus Gas,
Compressed air,
Caustic soda.

None of them have worked so someone else can try.

I'm having the exact same experience with a stuck seatpost on my 89 Courier Comp. Trying the last resort method of Caustic soda, but not holding out much hope. Seatpost is all the way into the frame, which also doesn't help.

I'd be really interested to hear your experiences with having it machined out, and if you don't mind, some idea of how much it's costing you.

Cheers!
 
i drilled out my seatpost in my Karakoram - more thanks to my dad, modified a masonary drill bit, it bore down and left a slim tue inside, i could prise out with a screwdriver
 
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