Canburglar Mechanisms

[themccannman]

Originally Posted by Jonathan Norris

It really doesn't matter who is fastest at getting to the bins... it matters who comes away with them , I'm excited to see these mechanisms go head to head.

I'm going to disagree, it's 100% about who gets there first, it's very easy to prevent your opponents from grabbing it once your mechanism is there before you even pull them back.

Originally Posted by Mr. B

From the match videos that I have seen teams 118 and 1678 seem to be the fastest. Both robots do not need to move before releasing their can grabbers. In order to reach the 2 cans their arms extend out as/or after they are released.(required to stay below the 78" height limit) Most other robots must drive to the totes before releasing their arms.
Does anyone that has seen these robots in person know how the arms are extended?
Thanks
Also, 558 and 329 can be seen grabbing cans here
http://www.chiefdelphi.com/forums/sh...light=waterloo

Considering both us and 118 are scraping our mechanisms I think I can tell you all about them. I was a little surprised when I first saw their telescoping mechanism because was actually completely identical to ours which was kind of funny.

We both have round tubing held inside of square tubing. We used a bearing block on the outside of the square tubing, and an internal bearing block on the end of the round tubing inside to keep it constrained at two points while it slid.

We both extended our mechanisms by just running a string from our elevator frame down the end of the square tubing to the bottom of the round tubing. As the arm traveled through it's range of motion the string would pull the round tubing up through the square tubing the exact same amount every time it fired.

I can also tell you though that 3310's mechanism was faster than ours when we were running it with two motors (decided we didn't need all 6 for sac since it's getting scrapped anyways).

Hope that answers your question.