Originally Posted by
bobotech
What I would do is measure the amount of exposed seat tube after you have the saddle where you want it. Then just make sure that any new post you get has at least that much post showing before the insertion marks.
That's another good tip.
Well, actually, the seat was not where I wanted it.
It was way over the min insertion point and my legs were still a little uncomfortable (again, it's an old bike that's too small for me).
I'll just remember that the current one had 180 mm tube and 100 mm beyond min insertion point. So if the new one's roughly 300 mm with 100 mm beyond insertion point, I should be totally fine.
But then again yeah, maybe longer posts require longer insertion points, I don't know. I'll definitely check everything in the shop before buying.