[MrBasse]

We actually discussed the tank tread idea as well, but one of our mentors brought up a really good point. How many commercial pitching or throwing machines do you see with tank treads? With a foam ball especially, the shortest amount of time that the ball can be in contact with the wheels will not only benefit the condition of the balls (if the belts spin at different speeds at all, the ball spins and it could do some damage to game pieces), but also will help with size, weight, and ease of construction of the mechanism.