842 belt test
 

http://www.youtube.com/watch?feature...&v=q0ZJV0i7fm0
We used poly cord before in other years, but we are looking at belts this year.

Re: 842 belt test
 

I like it.

Re: 842 belt test
 

I like it as well. I would probably put the driving motor above the actual system and sprocket and chain that to an assembly that runs the belt so the motor doesn't put so much stress into it. I also would extend the belt drive to a 90 degrees angle down as close as you can the the bumper zone on the edge. That would be one hell of a lightweight ball collector.

Re: 842 belt test
 

Now I am rethinking our choice to go with polycord. Any specific reason you went with belts? I would think you would have less stress on the motors since you dont have to stretch the cord too much. The only down side I can think of is that is a fairly small width collector. Of course, there are always tradeoffs...

Re: 842 belt test
 

You could use multiple belts. We figure for the elevator part of our robot we can get away with one

Re: 842 belt test
 

Was that the main factor for leaning that way? Belts are super effective, just wondering what your particular reasons were.

Looks nice.

-Brando

Re: 842 belt test
 

We've built many a robot with timing belt based ball handling mechanisms with great success, so you're on a good path IMO. Your mechanism looks solid from my seasoned eye, keep up the good work!

Re: 842 belt test
 

We are looking to return to the kind of belt system that we used in 2009, but scaled down two feet tall and two belts wide. That elevator was so beautiful, and SO FAST. The time from grab, to alignment, to shooting is no more than four seconds.