Ball harvester and elevator

[falconmaster]

Harvester
http://www.youtube.com/watch?v=0z3UFCcTIAI
Harvester and elevator
http://www.youtube.com/watch?v=QnD4T1VvE-0

[SushiKitten]

Hey that's pretty neat. Are you guys planning on being a feeder bot then?

[Gregor]

What is the compression of the ball in your harvester and then your elevator?