I went through the calculations just now and it seems like it may not be able to lift the robot so we're prepared to switch them out to 1.5'' bore.
I can't figure out how all the forces are acting but looking at how the weight is acting through the mecanum wheel straight up and how the module is pushing sideways it seems like it may roll the wheels outward to switch wheels instead of just pushing straight down to raise the wheel. Would this help at all?
If someone could help me draw a FBD and figure that out, i've highlighted where the piston pushes and the rotation points
