Originally Posted by Kontact

No, widening chainstays are not the reason Q is getting wider. Newer bikes do not have less crank clearance. You can mount an old 7400 Dura Ace crank on any new bike that can be made to accept an English BB.


I appreciate you putting the thinking cap on, but the things you are claiming are relatively easy to disprove with a ruler.

Bearing systems have grown wider, pushing out the center of the crank, and hollow or carbon crank arms are thicker than older solid crankarms.