Quote:
Originally Posted by Al Skierkiewicz
Ollie,
Don't forget that a 140lb robot running at 12 ft./sec imparts a pretty big side load to your module and all the force will be transmitted to the frame through the ring and a small amount to the top bearing. You can't keep your friction numbers unless all the tread is on the floor.
|
i understand that. we ran this same setup last year with zero issues. we even ran it without the lower support bearing for our 2 regionals. we did break 2 of the top posts but that was because of faulty welds. we redid them in billet and they held more than ok. the lower bearing is there for secondary lateral support and is not our main means of lateral stabilization. yes the forces are so great but they are so instantaneous that even if it does make something bind it will do it for such a short period of time it would be insignificant. the module is designed to be 100% support by the top post. the lower bearing is there for redundancy. i just put it where it was because i was just to lazy to redo the side panels, but it will probably be located closer to or below the axle of the wheel