You can always use more than 2 pneumatic pistons if you need them. I don’t see why a 1 motor claw won’t be able to grasp a mobile base. Just grab it from the bottom as if you were grabbing them with your own hands.
You shouldn’t need 4 motors for your rd4b if you purpose it for cones alone, especially with some minor elastic assist.
We found that a four piston mobile goal lift was able to pick up a mobile goal with ~15 cones stacked on top with ease, so 2 pistons should be plenty for just a mobile goal or even a mobile goal with cones.
My plan is to have a double reverse 4 bar similar to the ri24 video, only with an arm like team 62s from skyrise in the center as well. The mobile base will be stored in the center, hence the piston lift. Then it’ll be lowered and the claw willlift it over the 20 point bar
Sorry m999 but considering you couldn’t control a normal 4 bar1:3 i don’t think you will be able to control a DR4B 1:3. With this in mind, as you mentioned before, a DR4B raises 2X faster. In my mind this means that a 1:6 raises effectively as fast as your strastruck arm, which again, uncontrollable. This leads me to believe a 1:5 ratio is going to be very hard to actually control unless its all auton. Just sayin.
I’m curious what you guys mean when discussing “uncontrollable”. Not sure if you’re hinting at minute adjustments or general up and down.
Also, I’m increasingly perplexed by people mentioning strength when discussing cone-only rd4bs…I fail to see how strength should be a consideration. You essentially just need enough torque to lift your intake; the cones weigh negligibly, especially given the 1 cone restriction.
My plan is to have all cone stacking be automatic. I line up a cone with my robot, probably a concave surface that funnels one cone at a time into position, and then I press a button, and it gets stacked. Easy (I hope).