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Unread 09-01-2013, 09:12
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Re: Mecanum vs Treads

Quote:
Originally Posted by MARS_James View Post
I don't understand this at all, how does the bump make mecanums not work? We used them last year and got double or single bridge balances very easily
Take a look at the force vector diagram for the mecanum drivetrain. The wheels always apply force at 45 degrees from the direction of the wheel rim. The only reason you can drive straight with them is because opposite pairs of wheels push against each other, cancelling the sideways force and resulting in straight motion. When you take one of those wheels out of the equation or start shifting weights unevenly between wheels, things start getting wonky pretty quickly. The fact that the rollers aren't perfectly frictionless means driving straight isn't affected quite as much as strafing, but the effect is still there.
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