On what kind of surface would a square wheel function the same as a round wheel?

(In reply to re(7): I dont know why but.... by TomM)

I believe falling all the way to the base of the valley is essentiona for the square wheel if we want to make its motion smooth. Meaning that the center of the wheen rmains constantly at the same level vertically.

Posted by levik on 2002-11-21 08:24:31