Originally Posted by
BluesDawg
Raising your handlebars with a steerer extension or high-rise stem will also shorten the reach because of the head angle. TT length as an isolated number is not the key. Stack and reach are more important.
yes! that's what I am trying to predict. I have been using Bikegeo.net as a tool to figure out what I could do. sometimes the geo for older frames is incomplete, so I have to guess. my old Soma Double Cross disc had an
effective stack of 608mm and
effective reach of 463mm. by effective, I mean the distance from the BB to the handlebar.
I tried plugging in geo figures from some old 26" mtbs and its hard to make that happen!
give it a try, if you're curious-
Stack and reach calculator