You sure you wanna ask this here? reference: http://forums.13x.com/index.php?threads/airplane-treadmill-mythbusters.159298/
Neither, it's how two wheeled vehicle steering geometry works. Get a toy motorcycle and look at it while it's rolling.
It causes the bike to fall into the direction of the turn. When you've reached the desired lean angle, stop steering.
^^^ countersteering is simply the most effective way to rotate a bike on it's longitudinal axis to balance a bike in a turn. it doesnt actually turn the bike in the direction u want and for a second, you actually are moving in the opposite direction.
I'm still pondering these two mysteries of life: 1. "Less Filling" versus "Tastes Great" 2. Pepsi versus Coke Let me sort those two out, then I'll get to this one, OK?
It's way less than a second, though. The question is: what's the physics behind countersteering? How is it described from a physics standpoint?
Motorcycles turn by harnessing the pure power of awesome directly from the soul of the multiverse. Motorcycles make physics their bitch.