Originally Posted by dutret
No it doesn't, it lowers the tt and therefore shortens the seat stays and the headtube. With classic geometry it does not require changing any angles(outside of the meaninglessone related to the seat stays) nor does it require changing the lengths of any other other tubes. Therefore it effects neither weight distrobution nor steering geometry. The only difference in ride left is the miniscule change to stiffness.
Once again you are blabbing about something you don't understand. You even admit you have no clue about it. Why bother posting at all?
Unless one is looking at a custom frame (and I don't believe we are), geometry actually does change as the size (generally taken from the seat tube length) changes. If you define the term "to require" as something to which you have no alternative, than a change in geometry is generally required when changing sizes.
This is simply the way mass production frames are made. You should have noticed this when you were purchasing your crosscheck.