Hello, so our team is working on our off-season bot right now. Originally the design called for a pvc spool but it was switched to a 3d printed one because of sourcing problems.
When we were running the elevator up with a battery it stopped 3/4 of the way up. After closer examination it is from the shaft key literally tearing into the plastic.
We then found a metal spool that fit the shaft perfectly. The one for belts on the Kop drive trains. But, we can't figure out a way with our limited manufacturing abilities to attach the webbing to the spool.
Here are some pics
http://imgur.com/a/JvAeY
http://imgur.com/cJh4gVH
The webbing is just there for pictures. It's only ziptied up there.
Thanks