Originally Posted by Teamskene's
What do you suggest as a good height to have sticking out of the top of the steerer?
If you are going threadless however much you need to get the bars at the right height.
If threaded the stack height of your headset.
Figure out how high you need the saddle to be from a current bike remembering that fore/aft position, saddle and pedals will all effect it some. Then figure out how high you want the bars to be and therefore how long of a steerer tube you need. Either way this isn't a question people can answer for you.