Quote:
Originally Posted by PAR_WIG1350
What if a set mecanum wheels was built that used 2 axles per roller? Since the roller can't rotate about 2 axes simultaneously, there would be no rotation, but there would still be axial free play. Then you could build a set of wheels that is mostly identical, but which uses only one axle per roller to allow rotation. By comparing the 2 wheel sets in situations where the robot strictly moves forward or backward should tell us if there is significant rotation of the rollers in these cases.
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I think you're on to something there... depending on the style of wheel it should be possible to non-destructively lock the rotation of the mecanum rollers.
Compare the performance of the robot with locked rollers to that with free-wheeling rollers. If there is a difference in performance, I'd suspect it would be due to the rollers... rolling.
Jason