It was a combo of ammonia, and a bench vise that worked for me. TH
bench vise alone did not work. I think fluted seatposts have a bit of
an advantage. without the flutes the ammonia just runs off, not in.
On Aug 31, 2008, at 1:40 PM, Andrew Bushaw wrote:
I have run into this a few times with aluminum seatposts/steel
frames. I've tried the ammonium route before but found it much to
stinky/messy and didn't get results. I have had success with a
sheldon method of taking a longish hacksaw blade and cutting a
vertical slit in the seatpost from the inside, stopping once you get
near the frame. Then I grabbed onto it with a monkey wrench and it
just sort of collapsed into itself as I twisted it. Very, very time
intensive but effective. I've also heard the CO2 heating/cooling
trick works as well. -Andrew FM Community Bicycle Workshopthethinktank-request@bikecollectives.org wrote:
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Today's Topics:
- Re: Frozen seatpost - stem removal tips by Jobst Brandt (Rigel Christian)
- Re: Frozen seatpost - stem removal tips by Jobst Brandt (Arlen Cooke)
Message: 1 Date: Sat, 30 Aug 2008 21:33:09 -0700 From: "Rigel Christian" rigelc@gmail.com Subject: Re: [TheThinkTank] Frozen seatpost - stem removal tips by Jobst Brandt To: "The Think Tank" thethinktank@bikecollectives.org Message-ID: d47aa47d0808302133h343be5bcm4f56b1b27876d95b@mail.gmail.com Content-Type: text/plain; charset="iso-8859-1"
the people on the framebuilders list suggest two things when
everything else has failed:
- ammonia
- lye (red devil has been removed from the market because of meth
hysteria, but drano works - anything with sodium hydroxide as the primary
ingredient)these work for aluminum-seatpost-with-steel-frame only, AFAIK. the
latter will actually eat away at the seatpost itself (and produce probably- nasty fumes). the former stinks really bad.i have never tried either of these, but they seem reasonable from a
chemical standpoint.On Sat, Aug 30, 2008 at 9:08 PM, Ethan elabowitz@gmail.com wrote:
For a seatpost (or any aluminum part that fits into a steel tube),
I would think one would prefer to cool down the offending aluminum
seatpost rather than heat the (painted steel) seat tube.Cool seatpost = smaller seatpost, ya?
I hear this can be done with a CO2 cartridge, but I've never had
to try it.Ethan Richmond, VA -- http://bikebuilding.blogspot.com
On Sat, Aug 30, 2008 at 11:42 PM, joshua muir
muirjoshua@gmail.comwrote:I didn't see anything abut heat in there- I have had a fair bit
of success heatng stuck joints, and pulling stuck aluminum stems and seat
posts.just don't overheat (or use the auluminum parts again).
josh
On Sat, Aug 30, 2008 at 6:30 PM, dragonfly@mac.hush.com wrote:
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Kyle McKinley, I love that I can open an e-mail and read that anyone is someone's "favorite living bicycle thinker".
Thank you for having a catagory of "bicycle thinkers" in your head, for having favorites, and for having so many favorites that they must be subcatagorized into "living" and, presumably, "dead" 'bicycle thinkers'.
Reading your post cheered me up and made me feel that the world is a good place.
I think I'll go read Mr. Brandt on wheels right now. It just became the most important thing on my to-do list.
Kudos to all Americans for your historic Presidential slate-- Obama-Biden, McKinney-Clemente, Nader-Gonzalez, even McCain-Palin, despite the shudder that one gives me--has everyone seen the
photos of Barak Obama riding his bike around Chicago like a regular commuter cyclist?SashaOn Sat, 30 Aug 2008 16:48:30 -0400 kyle mckinley bicirider@gmail.com wrote:
Mr. Brandt is my favorite living bicycle thinker. His posting on wheels (fully catalogued on the web) make for incredibly interesting and entertaining reading. Unlike most everyone else out there, Brandt is a engineer, with no links to the industry. He's exactly the kind of grumpy old codger that we need in this scene, and I've never known him to be wrong. Thanks for these reposts... His gruff responses make me laugh out loud. -kyle
On 8/6/08, Mark Rehder mark@re-cycles.ca wrote:
> Speaking of Jobst, he has an FAQ on Sheldon's site: > > http://www.sheldonbrown.com/brandt/index.html > > Lots of good reading (and opinions) there. > > Mark Rehder > http://re-cycles.ca > _______________________________________________ > Thethinktank mailing list > Thethinktank@bikecollectives.org > > http://lists.bikecollectives.org/listinfo.cgi/thethinktank- > bikecollectives.org
-- If an Easyrider rides easy, then a bicirider rides bicis
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