Stuck Seat Tube
Discussion
I have mainly been riding my Stanton on DJs, BMX tracks and a bit of light DH runs over the last few months, and this weekend went over to Gizburn to find that my seat post is well and truly stuck! I tried taking the saddle off and using a massive adjustable spanner to get some twist into it, it wouldn't budge, even with two of us tugging. It is well and truly stuck in there. I have been periodically dousing with WD40 and GT85 to try and get it free, but as yet no luck.
Any thought or home remedies? I had to do the whole red route (25km ish) out of the saddle! Don't fancy that again.
Any thought or home remedies? I had to do the whole red route (25km ish) out of the saddle! Don't fancy that again.
adam85 said:
Have you tried a good penetrating spray or a bit of heat? My seat post was cold welded and this eventually worked.
A guy at halfords on the way to Gizburn tried something called "shock and unlock" to no avail.Not tried heat, what kind of heat are we talking? And to the frame or the seat post?
TheBALDpuma said:
A guy at halfords on the way to Gizburn tried something called "shock and unlock" to no avail.
Not tried heat, what kind of heat are we talking? And to the frame or the seat post?
I used a heat gun on mine, a hair dryer might do the trick eventually. Both my frame and seat post were aluminium which was a bit of a pain but if you can concentrate heat on the frame you may get enough expansion to get the seat post moving. Not tried heat, what kind of heat are we talking? And to the frame or the seat post?
On my 8 month old steel bike the post was stuck in @ the weekend, I only adjusted the height a month before, thankfully it wasn't too far gone and I put another saddle on to give me more leverage, lots of WD40 and other spray lube after a few mins it finally shifted. Put loads of copper grease on it now in case. I was surprised as it is a newish bike, Ive heard that some (alu?) posts can "weld" themselves into steel frames
If it was me and it didn't move after lots of lube and elbow grease I'd just take it to a decent shop and let them sweat it out, I'm too heavy handed and would end up making it worse!
Ive seen someone before put the bike post first into a bench vice, then used the actual bike as a giant lever. DIdnt work though as the post was still stuck, he s then hacksawed off the post down to the frame and then dremmel'd the inside post out, took ages though and not a lot of room for error
If it was me and it didn't move after lots of lube and elbow grease I'd just take it to a decent shop and let them sweat it out, I'm too heavy handed and would end up making it worse!
Ive seen someone before put the bike post first into a bench vice, then used the actual bike as a giant lever. DIdnt work though as the post was still stuck, he s then hacksawed off the post down to the frame and then dremmel'd the inside post out, took ages though and not a lot of room for error
okgo said:
I have same issue currently with steel frame and I guess steel post (?), I've also tried GT85 etc, I've also tried hitting it as hard as I can with a hammer and it moved a TINY bit, but not enough to be free.
Should I also try a special spray ?
Try somthing like that (im sure there are better) : http://www.halfords.com/webapp/wcs/stores/servlet/...Should I also try a special spray ?
Keep putting it on for a few days, see if there are drain holes underneath the bottom bracket, I would spray it there and leave the bike upside down
pablo said:
You need to get to the seat post from the other side too. Turn the bike upside down, remove a bottle cage bolt and pour oil, lube, coca cola etc into the seat tube. If you leave it for a few days then apply some heat with a hair dryer or a heat gun, it should come out.
I don't think I've got bottle cage bolts on the seat tube part of the frame. I will keep applying oil over the next few days then get a hair dryer on it!Thanks for all the advice.
The torque applied by a bottle jack would crush the top tube.
If you've tried heat and leverage then use caustic soda to melt the seat post out- it will be aluminium, and will be dissolved, whilst the steel will be fine.
However, you'll want to strip the bike down first, and don't expect the paint to be A1 when you've finished.
Might be a good time to get that powdercoat you've been thinking of.
If you've tried heat and leverage then use caustic soda to melt the seat post out- it will be aluminium, and will be dissolved, whilst the steel will be fine.
However, you'll want to strip the bike down first, and don't expect the paint to be A1 when you've finished.
Might be a good time to get that powdercoat you've been thinking of.
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