Quote:
Originally Posted by Kevin Sheridan
I would even argue that mechanically there is a pretty big difference too. The tolerances are a lot tighter when machining and assembling the frame for mecanum, otherwise you could end up with only 3 wheels on the ground and a really bad drivetrain. 6WD tank is much more forgiving in regards to bad machining.
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Oddly, for mecanum you want a floppy chassis. Rigidity is your enemy. It's one of those small things most teams miss when building mecanum and then get confused when they lift a corner on a mounting plate under the carpet and their bot gets all squirrelly.
But I wouldn't know this unless I've built a handful of omni directional drives (kiwi and a handful of mecanums) and fielded them. It's NOT as simple as people think.