Originally Posted by
spcialzdspksman
Is so, if I replaced my IRO Mark V with a really low fork rake, will that completely change it to track geometry?
my 50cm IRO has 74.5 st and 72 ht
Will that completely change the handling, or am I missing a point here?
Apparently you are missing the point. A decreased amount of rake will increase the trail and make the bike more sluggish. Rake and head tube angle effect how a bike handles, but they aren't interchangable, nor are they the only factors that determine how a bike handles. I would stick with the stock fork or something with very similar specs..it is designed to work with the geometry of that particular frame. Deviate too far from it and the bike will not handle in a way that is was intended and it is not likely to result in an improvement either.