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Unread 29-03-2010, 20:17
Mr. Lim Mr. Lim is offline
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Re: How Do mecanum wheels handle the bumps?

Maybe I can explain it this way?

Put two CIMs into a single ToughBox.

Run the CIMs in opposite directions.

Do the forces balance? Yes.

Is there net motion? No.

Does that mean the motors won't self-immolate in a binge of stall current thirst? I think we both know the answer here. Many teams have inadvertently fashioned some very efficient OVENS out of the kit-supplied motors... it's not hard to do. Just because there is no net force, doesn't mean the energy isn't going somewhere other than motion.

Now construct a gearbox where the two motors are fighting each other at 45 degrees, but work in the same direction at 45 degrees at the same time. In one component the motors face no resistance, and all is fine and dandy. In the other component, you have the same situation as above where the motors are essentially fighting each other, and neutralizing the work done entirely to 0.

Does that shed some light into where that remaining ~30% goes?

My team is running mecanums this year, and anecdotally that 30% is noticeable - I wouldn't try and push anyone with our robot. But the benefits... they are intriguing .
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Last edited by Mr. Lim : 29-03-2010 at 20:44.