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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

stuck seat post!

Old 08-07-09, 07:00 PM
  #1  
larP
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stuck seat post!

i just built my first singlespeed a few weeks back, and when i got the frame, the seatpost was already stuck.. i want to raise it a little bit, but i can't seem to get it out..

any ideas on how i can get it out??
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Old 08-07-09, 07:55 PM
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use an allen wrench?

btw i have some constructive criticism on your bike if you'd like it.
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Old 08-07-09, 07:59 PM
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https://www.sheldonbrown.com/stuck-seatposts.html
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Old 08-08-09, 11:00 AM
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I had the same issue, and resorted to the same list. I have an aluminium seat post, and the frame and post galvanized. And thus I actually found that the Windex method worked best. At first I was skeptical, but I sprayed it in and around and still couldn't get it out. 24 hours later, it came out no problem. Just be sure you get it all off when you're done.
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Old 08-08-09, 12:23 PM
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if you can hold it with something and knock it into the seat tube a little more you may free it up, worked with my friends old bike after giving it a good spray with wd-40.
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Old 08-09-09, 09:56 AM
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Originally Posted by das_pyrate View Post
use an allen wrench?

btw i have some constructive criticism on your bike if you'd like it.
fire away..
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Old 08-09-09, 10:26 AM
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drill a hole in the seat post, then put a 10 foot rod in there for leverage.

Last edited by MJH100; 08-09-09 at 10:50 AM.
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Old 08-09-09, 10:48 AM
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kroil it.
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Old 08-09-09, 10:57 AM
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Originally Posted by MJH100 View Post
drill a hole in the seat post, then put a 10 foot rod in there for leverage.
definitely. leverage is pretty much 100% in getting a stubborn seat post undone.

oh and penetrating oil.. lets not forget that. none of that wd-40 either.

Last edited by REMspeedwagon; 08-09-09 at 11:46 AM.
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Old 08-09-09, 10:59 AM
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it sounds comedic, but I bet id' work.

Or weld some thing to it. Depending on if you want to salvage the post. etc.
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Old 08-09-09, 11:18 AM
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WD-40 won't work, there are penetrating oils made for just this thing. I've found the key is to get the penetrant inside the seatube- pull the BB or put it in through a water bottle boss, keep the frame inverted for a night, then take off the seat, lightly clamp the post in a vise and turn the frame..it will slide right out.
You know what works best to break the bond between the post and the seatube? Coca-cola!
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Old 08-09-09, 11:37 AM
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Originally Posted by Live Wire View Post
WD-40 won't work, there are penetrating oils made for just this thing.
Agreed. WD40 is for general cleaning and removing water from electrical componants (WD = Water displacing). You want a spray penetrant like plusgas or duck-oil. You also get stuff called freeze and release spray. This has chilling agents in it that make the metal contract as they evaporate along with a penetrating oil to get into the gap resulting from the freezing process.

Failing that, a well equipped machine shop will have a slide hammer with an expanding chuck on the end (designed for pulling bearings out of engine casings) that will grip the inside of the seat post and allow you to hammer it out.
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Old 08-09-09, 11:40 AM
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Originally Posted by adriano View Post
kroil it.
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.
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Originally Posted by live wire View Post
there are penetrating oils made for just this thing.
Originally Posted by stinkwheel View Post
you want a spray penetrant
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Old 12-02-09, 07:15 PM
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use something called B'laster. good stuff
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Old 12-02-09, 07:25 PM
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Ask the C&V forum, they have way more experience with this.
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Old 12-07-09, 07:28 PM
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This thread is a bit old, just so you know.
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Old 12-07-09, 08:18 PM
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Originally Posted by leed View Post
This thread is a bit old, just so you know.
true, but the OP seems to have vanished, so now we can bash on his bike.

Obviously the wrong size frame, I mean look at that saddle height!!!
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Old 12-07-09, 08:44 PM
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Originally Posted by fuzz2050 View Post
true, but the OP seems to have vanished, so now we can bash on his bike.

Obviously the wrong size frame, I mean look at that saddle height!!!
And that brake lever placement, I mean to each his own I guess but at least go for a front brake if your only gonna have one
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Old 12-07-09, 09:40 PM
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Originally Posted by layhole View Post
use something called B'laster. good stuff
FYI here's the link to the PB Blaster. https://blasterchemical.com/display.cfm?p=50003&pid=4

That stuff rocks. Not just for un-sticking things. You have a rusty chain? Put it in a pie plate and spray the stuff on. Let it sit for a while. The rust will melt away. Don't get it on your clothes and it's smelly, think gasoline type smelly.
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Old 12-07-09, 09:50 PM
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Originally Posted by larP View Post
i want to raise it a little bit, but i can't seem to get it out..

any ideas on how i can get it out??
...
original_image.gif

Last edited by spcialzdspksman; 12-07-09 at 09:55 PM.
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