Quote:
Originally Posted by Alan Anderson
In general, three wheels will always be touching the floor no matter what angle they are at. The two reasons I see for using the nearly flat angle are 1) it lowers the center of mass, and 2) it moves the contact point outward just a little more from the center of the robot.
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I believe that the motors are moving upward as much as the wheels and gearbox move down, so I'm not sure about #1.
For #2, this could also be done by putting the motors inboard of the wheels; the wheels could be just a fraction of an inch from the outer frame.