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

[Lil' Lavery]

Originally Posted by icdumbpeeps305

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.

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?