View Single Post
  #73   Spotlight this post!  
Unread 29-03-2010, 23:41
Ether's Avatar
Ether Ether is offline
systems engineer (retired)
no team
 
Join Date: Nov 2009
Rookie Year: 1969
Location: US
Posts: 8,134
Ether has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond reputeEther has a reputation beyond repute
Re: How Do mecanum wheels handle the bumps?

Quote:
Originally Posted by efoote868 View Post
Seems the key is *when* the rollers start slipping, which we've yet to determine.
This much has been determined: In a face-to-face pushing contest between robots which are identical except that one robot has standard wheels and the other has mecanum wheels with rollers made out of the same tread material, the robot with the standard wheels will win the contest; not because of any "71% torque efficiency" issue with the mecanum wheels, but rather because the mecanum wheels will lose traction before the standard wheels do. And they will lose traction before the standard wheels do because they have higher forces acting on them (in the plane of the carpet) as explained in previous posts.

Quote:
http://www.chiefdelphi.com/forums/sh...6&postcount=33

- If the motors are sufficiently powerful, a point will be reached where the wheels start to slip. RobotA, with the mecanum wheels, will reach this point before RobotB, with the standard wheels.

~