Denny, just a curious observation. Take that point as a weight on a tire/wheel combination. In a tire shop, the tire spins, the tech adds weights, the weight describes a circle. In real life of a wheel in motion, the weight is a cycloid curve. The animation would be more fun having the addition of the radius coming from the center.

Last edited by Cosmo; 05/18/2015 1:19 AM. Reason: radius

~ Cosmo
1949 Chevy Half Ton
Rocinante, like Don Quixote, he is awkward, past his prime, and engaged in a task beyond his capacities.
"...my good horse Rocinante, mine eternal and inseparable companion in all my journeys and courses." ...Don Quixote, Cervantes
"If you come to a fork in the road, take it."...Yogi Berra
"Rudeness is the weak man's imitation of strength." ...Eric Hoffer