pic: Team 383 teaser

[Manoel]

Originally Posted by ducttapedude

It could be a roller, or is it a main drum in the center of their robot??

Listen to those pink guys, they sure can smell a drum roller five thousand miles away

Originally Posted by Woody1458

Also by counting the tubes you can approximate that this roller is 24" long, so they are using a wide robot style. Also the diameter is about 3"~4" based on the fact that pneumatic tubes are .25 in OD. Also the fact that the tubes aren't squared off but have pointed cuts lead me to believe that they had to be either threaded through something or squeezed into something tight. Maybe a foam covered roller? Like a paint roller?

The "normal" (pre-filter) picture shows a ball bearing at the end of the ~4" OD (10 cm, actually) PVC tube. The perspective threw you off big time, the roller was 54 inches long when we took the picture, it's been trimmed a foot or so after that.
We chamfered the pneumatic tubes to make it easier to insert them - there's a 0.8 mm interference fit between tube and hole, and we got a lot of calloused students and mentors