Seat Post stuck in carbon frame

[yeboabe]

Need help please have a Giant Carbon MTB frame and a Titec Alu seat post stuck...have appliedoil based release agents and still nothing!!

 

Any ideas or help would be appreciated

 

Thanks

 

[Chrispy]

Ask the Yellow Saddle man

[Bike Mob]

It's going to be difficult without trashing your seatpost...

 

But that is better than trashing the frame.

 

Usually involves cutting the seatpost and then slicing a groove in it.

 

Try using some coke though, it has been known to eat away at corrosion. Pour is in from the BB side if you can.

 

[BogusOne]

Sitting with exactly the same problem on the same frame . Seatpost is allready stuffed, looks like its going to be a LONG agternoon

[Johan Bornman]

As kind as all the advice about Coke, Q-20 etc is, it is useless. The agent cannot penetrate and if it does, the area of attack is so small that only a fracion of a millimeter is affected.

 

Search for this topic on The Hub, there has been extensive advice and step-by-step instructions given. It is foolproof.

 

But first you must get used to the fact that your nice seatpost will be trashed. Chicks say that lavender oil helps to calm you. Me, I just open a beer and grab for the hacksaw.

[Johan Bornman]

OK, I've done your homework for you.

 

https://www.bikehub.co.za/forum_posts.asp?TID=42913&KW=hacksaw+blade&PID=676827#676827

[Slowbee]

JB, you need a hacksaw to open your beer ? Dude we need to talk ..clearly you are doing something wrong. 

[yeboabe]

Thanks for all the info i shall try and let you know!

[walker]

Stupid Question... but have you tried attaching a saddle to seat post and then removing the seat post as this gives you something to hang on to while pulling.

[GreyOwl3.0]

I had the same problem a long time ago! And, it resulted in Tony Impey cycles hacking my seat post apart like JB said. Nothing else worked.

Why is this JB? Someone told me that some lube's, oils or something like that actually end up 'bonding' themselves to the aluminium? Is this true?

[Johan Bornman]

I had the same problem a long time ago! And' date=' it resulted in Tony Impey cycles hacking my seat post apart like JB said. Nothing else worked.

Why is this JB? Someone told me that some lube's, oils or something like that actually end up 'bonding' themselves to the aluminium? Is this true?

[/quote']

 

Yes, it is true. I have explained this many times here. Search for "emulsion" in any of my posts - perhaps "emulsion" and "seatpost" will bring up the revelvant thread.

 

[BogusOne]

Had to hack through the stuck piece om 2 sides inside the frame but after about an hour with the hacksaw blade this is what i extracted.

 

Thanx for the advice JB

 

 

 

[Rocket-Boy]

Im so absolutely bleak now, just got my frame(alu) and noticed that the seatpost is stuck inside it(carbon)

 

Im wondering if there is any way other than this to get it out.

Its one of these frames:

 

 

Its got a little triangular wedge to hold the post in and that fits into the aero shaped part. Should I try work on that rather than cutting through the seatpost.

 

I really dont want to cut this post cos its sexy and has zertz and all

 

[Delgado]

Had the same problem....

 

https://www.bikehub.co.za/forum_posts.asp?TID=40328&KW=anti+seize

[Johan Bornman]

Had to hack through the stuck piece om 2 sides inside the frame but after about an hour with the hacksaw blade this is what i extracted.

Thanx for the advice JB

 

I only saw this now, you must have posted it when The Hub wasn't sending out update notification.

 

What you see there is very typical of this type of problem. That white stuff is the aluminium oxide.

 

The fact that the seatpost was anodised didn't help, because the inside of the frame was naked alu (am I right?) and the aluminium oxide came from there. Doesn't matter where it comes from, it swells between post and seat tube and it is then stuck.

 

Looks like you did a nice job, I don't see pieces of frame stuck to the post.

 

 

[Rocket-Boy]

 

Im so absolutely bleak now' date=' just got my frame(alu) and noticed that the seatpost is stuck inside it(carbon)

 

Im wondering if there is any way other than this to get it out.

Its one of these frames:

 

 

Its got a little triangular wedge to hold the post in and that fits into the aero shaped part. Should I try work on that rather than cutting through the seatpost.

 

I really dont want to cut this post cos its sexy and has zertz and all

 

[/quote']

 

 

Okay so I got it out last night.

The little aero bit next to the seatpost luckily has two triangular bits with opposing tapres that pull against each other to create expansion against the side of the seatpost and hold it.

 

So I took a long thin screwdriver and put it through the thread hole in the top triangular bit and gave it a good whack with a hammer. The bottom one then feel down into to seat tube and it was just a bit more effort to get the top one loose now that there wasnt as much contact area.

 

I think if it was a normal seat tube with just round sides and a standard clamp that I would have been sawing through that post in the end!