There is so much wrong with that handlebar setup it is hard for me to draw any conclusions from itthemidge wrote: ↑Wed Jan 23, 2019 7:05 pmSure, but the bars on this Bianchi are already angled such that the levers are more or less level with the tops. There are definitely going to be spacers involved with this planned threadless conversion.
I mean, tell me this frame isn't a little long and low. Look at all that seatpost and gooseneck!
In all seriousness, I do have to wonder how much that position has been optimized or is it simply what could be able achieved with the available components. Obviously, the drop portion of the handlebar is far from ideal. They are borderline unusable if you ask me. That bike has a pretty short head/steerer tube which means there is very likely little up and down adjustment available for the quill stem. It could be as low as possible already, limited by the butting inside of the steerer tube. My wife rides a similar size frame so I've encountered a similar problem before. The handlebar reach is also quite long. With some short and shallow modern bars set a little lower than shown, a similar position could be achieved while maintaining usable tops and drops.
If someone wanted to duplicate that exact setup with a threadless stem, then sure, they are going to need spacers. I just don't see why they'd want to.