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Unread 07-02-2007, 12:15
Ty Tremblay's Avatar
Ty Tremblay Ty Tremblay is offline
Robotics Engineer
FRC #0319 (Big Bad Bob)
Team Role: Mentor
 
Join Date: Feb 2006
Rookie Year: 2004
Location: Alton NH
Posts: 832
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Re: pic: Team 319 - Big Bad Bob's Lift System

Quote:
Originally Posted by Pjohn1959 View Post
We are using two of the same 2" cylinders. However, due to the tank restrictions, we can only deploy one at a time. How are you planning on using as many as you have at the same time?
We just lowered our working pressure. At 60 psi, the 2" pistons crank out almost 200 pounds of force. We don't need 800 pounds of force to lift two 120 pound robots, so we lowered our working pressure to 30 psi. Giving us about 80 pounds of force per piston. This gives us twice the amount of air to work with and we still have enough force to lift two robots.

P.S. We haven't done a complete two robot lift yet, but it shouldn't matter. The pneumatic solenoids require power to switch in and to swith out, thus if we push the "up" button even a millisecond before the end of the match, it will still go up.

P.P.S. Our lift platforms and the feet we put on our pneumatics are removable. So, if there is a robot in our alliance that can lift better than us, we just remove those parts and we have almost 2 inches of clearance.

Last edited by Ty Tremblay : 07-02-2007 at 12:24.