Originally Posted by
wphamilton
I see what you're saying. But just for the sake of argument wouldn't the thinner walls make the strengthening interior tube more useful rather than less?
If the inner diameter is consistent, then yes, but that's not the case most of the time. That means there is a small gap between the seatpost and the seat tube. If anything, a long seatpost rocks back and forth slightly, scratching the inside of the tube (not a big deal, but you get the idea).