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Originally Posted by Ether
Here are some of the factors that could cause a "good" and a "bad" mecanum drive to have different traction:
- type of wheel (model number)
- manufacturing tolerances of wheel
- manufacturing defects of wheel |
Of course these are going to make a difference. If you're not using the same wheels, I'd assume that they're not the same.
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- improper adjustment of wheel rollers
- improper alignment of wheels on vehicle
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This would affect your performance, however I doubt it would be to the degree that would make the difference between getting pushed and not getting pushed by an opposing robot with a strong drivetrain.
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- frame warped or too rigid
- poor weight distribution
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These are the most likely differences I see appearing and having the largest affect. However for the purpose of discussing pushing in mecanum vs skid steer, I don't think they'd turn the tables.
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When it comes to traction, all mecanums are not created equal
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Exactly. As I said before, if they're not equal, they are not equal. Of course there's a difference. If I built a tank drive on lunacy wheels, and another on 2" blue nitrile traction wheels I'd expect them to be different.
The point I was initially trying to make in my original post was that a well built skid steer drivetrain can push through any mecanum drive train. I would love to see a drive train on four mecanum wheels that could outpush the tank drive on any first pick robot at CMP. If I saw one of those, I would convert to mecanum immediately, no doubt.