Team 1717: Uncut & Highlight Video

[Lordblair]

Originally Posted by JVN

Are those numbers "free speed" or adjusted somehow?

Those are what we calculated as the theoretical speed, we didn't do any extensive testing to get an exact measurement.

Originally Posted by ekapalka

What I mean is, did you have to make your own, or could you have just acquired them (without changing your CAD model). Did your team also design and fabricate your own pulleys? .

We did manufacture all our pulleys and gears out of solid billets of aluminum. This allowed us to make custom sizes to fit any restraints we had, but we tried to stick to more standardized sizes for simplicities sake, especially with pulleys and belt spacing.

Originally Posted by glennword

I noticed that the shaft and wheel appeared to be extremely sloppy, shifting back and forth laterally about 1/4" or more. Was this intentional?

The angle on the GoPro we used actually makes the whole module a lot larger than it is, so what may have seemed to be 1/4" is actually a lot less. We were running about .010" to .015" of slop in the bottom axle of the wheel box.

Originally Posted by cjl2625

Looking at the 2012 uncut thread, it looked like you guys were dissatisfied with the performance of the gyro with the drifting and whatnot.
How did you improve upon this system since then, if you've managed to do so?

In 2012, we used just one gyro on our robot. This year we had two gyros, one being mounted upside down in relation to the other, that way we could use code to negate the drift. Having driven both the 2012 and 2014 robot, the second gyro makes a huge difference. There weren't really instances where I had to worry about re-zeroing during matches.