Originally Posted by
Pedaleur
But then the lack of an external race on the bottom will lower you back down a little. Plus the tire clearance down there seems to be getting less and less. I just went through this same dilemma, and I decided that it's impossible to really know, what with all the variables.
On the other hand KendallF is probably about right. ;-)
I always figured frames and forks designed for integrated headsets correct that stack difference (i.e. larger crown). Otherwise, "lower you back down" would also mean "alter the geometry". For example, lowering the front a little would also make the STA and HTA a little larger, and the bottom bracket a little lower. Someone correct me if I'm wrong.