Today there was a guy with a kid bike and the
saddle post was stuck in the pipe. He said it
was because the frame was of "lättmetal", which
is literally "light metal" but Google translate
gives "alloy". To me it looked like aluminium
but then again I haven't seen anything.
Is there anything known as "light metal" in the
bike frame world that I've missed?

And did it get stuck because of some issue
related to the material?

Anyway we were able to solve their problem by
first flushing with CRC 5-56/WD-40, then
putting a pipe inside the saddle post, then the
whole thing (the bike upside down) into a vice,
and then rotating the entire bike it came
loose easily.

So we got the saddle a bit higher and the dad
was very content and very impressed by the
whole operation for some reason. The daughter
tested the bike and said it was great, only the
saddle was too high!



--
underground experts united
http://user.it.uu.se/~embe8573