Magnets, how do they work?

[Ellis]

4 drills will out push any robot of any drivetrain if it gets underneath. So, good grip is one thing, but unless you can wedge under another bot to make use of it, it's pointless. Focusing on design is probably best for now.

Enough downforce to make a difference is easily enough added later on; they don't weigh that much when you're only trying to get (gap between steel floor and magnet allowed for) 3-4kg pull.

Tormenta 2 is just 4 drills, 24:1 gearboxes and 100mm wheels, and whilst it's not particularly powerful, it gets underneath and shoves other machines around nicely.