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02-23-2005, 08:01 PM

Andy Ksjls? writes:

> I got a stuck seat post in a seat tube. Someone suggested Liquid
> Wrench. I found it was just some lubricant. Will the more readily
> available WD-40 do the job?

That probably won't help either because, although you didn't say so, I
suspect you have a steel frame and an aluminum seat post. When these
two corrode together aluminum expands enough to stretch the seat post.
Yours may not yet be at that point but it probably cannot be removed
non-destructively.

The way frame builders remove these is to saw them off, bore them out
to a thin shell and grind away a slot in one side to collapse the
aluminum remains to remove them. Oil bases lubricants will not help.
An acid solvent might work its way in there but I doubt it.

Jobst Brandt
jobst.brandt@stanfordalumni.org

02-23-2005, 08:01 PM	#4 (permalink)
jobst.brandt@stanfordalumni.org Guest Posts: n/a	Re: Liquid Wrench Andy Ksjls? writes: > I got a stuck seat post in a seat tube. Someone suggested Liquid > Wrench. I found it was just some lubricant. Will the more readily > available WD-40 do the job? That probably won't help either because, although you didn't say so, I suspect you have a steel frame and an aluminum seat post. When these two corrode together aluminum expands enough to stretch the seat post. Yours may not yet be at that point but it probably cannot be removed non-destructively. The way frame builders remove these is to saw them off, bore them out to a thin shell and grind away a slot in one side to collapse the aluminum remains to remove them. Oil bases lubricants will not help. An acid solvent might work its way in there but I doubt it. Jobst Brandt jobst.brandt@stanfordalumni.org