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-   -   stuck seat post! (https://www.bikeforums.net/singlespeed-fixed-gear/571593-stuck-seat-post.html)

larP 08-07-09 07:00 PM

stuck seat post!
 
1 Attachment(s)
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??

das_pyrate 08-07-09 07:55 PM

use an allen wrench?

btw i have some constructive criticism on your bike if you'd like it.

fuzz2050 08-07-09 07:59 PM

http://www.sheldonbrown.com/stuck-seatposts.html

leed 08-08-09 11:00 AM


Originally Posted by fuzz2050 (Post 9442894)

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.

craigcraigcraig 08-08-09 12:23 PM

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.

larP 08-09-09 09:56 AM


Originally Posted by das_pyrate (Post 9442873)
use an allen wrench?

btw i have some constructive criticism on your bike if you'd like it.

fire away..

MJH100 08-09-09 10:26 AM

drill a hole in the seat post, then put a 10 foot rod in there for leverage.

adriano 08-09-09 10:48 AM

kroil it.

REMspeedwagon 08-09-09 10:57 AM


Originally Posted by MJH100 (Post 9449852)
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.

MJH100 08-09-09 10:59 AM

it sounds comedic, but I bet id' work.

Or weld some thing to it. Depending on if you want to salvage the post. etc.

Live Wire 08-09-09 11:18 AM

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!

stinkwheel 08-09-09 11:37 AM


Originally Posted by Live Wire (Post 9450105)
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.

adriano 08-09-09 11:40 AM


Originally Posted by adriano (Post 9449949)
kroil it.

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Originally Posted by live wire (Post 9450105)
there are penetrating oils made for just this thing.


Originally Posted by stinkwheel (Post 9450190)
you want a spray penetrant


layhole 12-02-09 07:15 PM

use something called B'laster. good stuff

jtgotsjets 12-02-09 07:25 PM

Ask the C&V forum, they have way more experience with this.

leed 12-07-09 07:28 PM

This thread is a bit old, just so you know.

fuzz2050 12-07-09 08:18 PM


Originally Posted by leed (Post 10118786)
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!!!

cnnrmccloskey 12-07-09 08:44 PM


Originally Posted by fuzz2050 (Post 10119007)
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

tmh657 12-07-09 09:40 PM

1 Attachment(s)

Originally Posted by layhole (Post 10100637)
use something called B'laster. good stuff

FYI here's the link to the PB Blaster. http://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.

spcialzdspksman 12-07-09 09:50 PM

1 Attachment(s)

Originally Posted by larP (Post 9442615)
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??

...
Attachment 127971


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