They might stay standing, but they would make a very nice (and easy) target!
So I'm not sure how long they'd stay standing. And even if you were protecting them, you'd have to do a very good job of keeping any opposing (or allied) robot from jarring you.

Best of luck!

I am dying to see a robot that can stabilize a stack of more than 3 and prevent it from A. being pushed over, and B. being pushed into their robot (therefore = to 0) against a robot designed to destroy stacks.

Our team is planning on stacking 4-5 high everytime a 6th is doable but really we don't perfer to do so.

Well you see, I earlier had designs, and a great strategy for making neat little pyramids out of bins......or just a random pile, either works, they can only go like 4 high, but they're hella stable...

Then again, there's the master plan of stacking 8, with a bot being able to carry/protect up to 4 bins...and can go under the bar.....but of course these are just designs....

This year they rejected my ideas and created a communisto roboto, a blocker, a very good one that lifts off the floor for extra grip....and that's why my designs haven't come into reality....

As promised, I'd get my designs posted as soon as I find a host robotics member to leech a scanner off of...

Our 'bot is dedicated entirely to stacking. We finished the stacking mechanism on Monday. Yesterday, we realized that we can't put one box on top of another, let alone having control over the orientation of the boxes.:ahh:

. . . Mmmmm, drawing boards . . .