Originally Posted by you
How would a steel quill stem compare in flexiness to alloy quills or alloy threadless stems? It seems that a steel threadless would be stiffer than a steel threaded.
I ordered an iro with threads and have been thinking about changing it, but then I wouldn't be able to run a really awesome front rack I found.
I'm pretty sure that even the bestest keirinest steel quill stems (edit: talking about traditional 1" skinny ones here) are flexier than the crappiest threadless stems. You can't **** physics. I don't think there is a steel threadless stem, at least not widely used. There's no need for one.