Quote:
Originally Posted by redbarron
Though I have no personal experience in the skid area I have driven a robot with casters, and I would say that the two wheel drive setup will not only lack in traction but it will tend to over steer until you practice with the bot a little bit. As far as wheels losing you time while turning, they will not with the right setup. If you have a bot that is wider than it is long than you will not have that problem. On th other hand if your designed bot is longer than it is wide it will tend to "jump" while turning, which is why it is popular for long bots to have > 4 wheels.
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wow, this makes a lot of sense now that you said that. does anyone know how to make a robot with theoretical values of, oh i dunno, 21.5 inches between the centers of the front and back wheels and 22 inches between the left and right wheels more stable as a four wheel drive robot (aka no bouncing). i know different types of wheels will matter but is it the coefficient of friction that is important. I know that what we do on our battlebot is use wheels that wear down when lateral force is applied and that is why it stays planted to the floor when doing turns on its 4 wheel drive but thats the only experience i have with 4 wheel drive