[jspatz1]

Originally Posted by Hawiian Cadder

.....if you want to make a tunable robot, i would take a look ate 1986 team titanium's robot from this year, they used an 8 wheel tank drive, with omni wheels on the ends, and were amazing, because it still has 4 traction wheels, it doesnt turn too easy, but turns better than a standard tank drive.

you might try reducing your gear ratio some if you want to turn better, even just 5 percent will make all the difference in the world.

in summary;
if you want to use omni wheels on the ends, use 8 wheels total, 6 turns way to easy and its easy to get spun, and the plastic omni wheels are the best option as far as cheap, versitile, durrible, and lightweight.


Edit: here is a video showing 1986's drive train, if you want an drive with omni corners to learn from, theirs is very good.

http://www.youtube.com/watch?v=DdnYpgoClW4

Here's a much better view of our 8-wheel in action.
http://www.youtube.com/watch?v=WPD82b-y6dc