pic: Team 319 - Big Bad Bob's Lift System

[Ty Tremblay]

Originally Posted by Lil' Lavery

Correct me if I am mistaken, but it looks like the pistons raise your robot as well as the other two? So, given the max weight of a robot being ≈148 lb. (120+13 battery+15 bumpers), wouldn't you need at least 444 pound of upward force? The 4 central pistons each producing 80 lb.s only gives about 320 lb. of force. Even if the outrigger piston is also 2 in. (which it doesn't appear to be) that's still only 400 lb. of force.
Is there something I'm missing?

We just did a test, and at 60 psi, we lifted two 200 lb kids. Add in our robot, and you have almost 550 lbs to lift. Plus we have air left over. I don't know why the other person can't fire both at the same time.