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Originally Posted by Leav
I can see what Dave is saying, and frankly, I agree - just because no one wants their robot to be disqualified because they chose metal wheels....
my team was thinking about using big metal bearings.... I'll try and describe them, because i don't know their name:
imagine a normal ball bearing ring, but imagine that the balls inside protrude inward, so that when a large metal ball is placed inside the bearing, it is seated on top of the balls, and can move effortlessly.
kind of like a (computer) mouse...
do these things have a name?
do you think we could find them in plastic?
Thanks,
-Leav
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I believe that is the "ball transfer" mentioned in jgannon's 01/25 post. Since they are generaly used for fairly heavy loads, I've never seen one made of plastic. That doesn't mean they don't exist, I've just never looked for one. In previous years we used fiberglass skids the serve the same purpose. We just found a nice shiny cup and laid up fiberglass around a bolt sticking up. These were then bolted to the bottom of the robot.
They worked pretty well, except for the massive static build up. I think we fried something that way.