Vacum system usage

[ngreen]

Originally Posted by Parker

I saw a robot in 2003 that created enough suction to swing the big ball around (30" diameter, 10 lb.).

That could of been us. We used a kit motor (Fisher-Price) plus a impeller (the one from a mini shop vac worked perfectly). The suction cup was a trash can lid with a non-permeable foam ring glued along the inside edge. When on the only way to pull it off was if the foam was pulled off. Having the vacuum constantly generated meant the seal didn't have to be completely leak free.