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View Poll Results: How does your robot posess the ball?
Roller (Ball magnet) 123 65.78%
Vacuum 35 18.72%
Armature 0 0%
We do not intend to posess the ball 11 5.88%
We did not ship a posession device, and will decide before competition 18 9.63%
Voters: 187. You may not vote on this poll

 
 
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Unread 28-03-2010, 21:08
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ttldomination ttldomination is offline
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Re: Ball posession: Roller (ball magnet) or vacuum?

Quote:
Originally Posted by Ether View Post
It would be most interesting to hear from teams with effective 2-roller ball magnets whether their bottom bar a) is fixed and does not spin or b) is free to spin or c) is motorized


~
Our bottom bar is fixed and it works like a dream. I can officially say that when I have the ball, I can drive it like I stole it. Heck, we can even play defense with a ball in our rollers.

Quote:
Originally Posted by RRLedford View Post
Do all these lower roller schemes have wheels ahead of them to prevent them being bashed into the humps? Or. perhaps they retract when traversing the humps? Then, if they retract, how can they prevent past 3" incursions when pressure from the ball pushing on them displaces them out of their proper incursion preventing location?
-Dick Ledford
Our front wheels were off-set from the front of the chassis by roughly 2" before we put on the roller system. We toyed around with the idea of having the bottom bar articulate, but in the end, we had to move our entire drive train up 2" to keep the bottom bar between the front two wheels.
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