pic: Team 1511 Prototype Drivebase Mk. II

[asid61]

Originally Posted by Chris is me

I've seen dozens of teams and robots with pocketed bellypans and no plastic sheet underneath that did not have any issues with this sort of thing at all. I don't think pocketing a belly pan is a bad idea - debris is rarely coming from straight up underneath your robot.

But in this case they drop the bellypan, so stuff can touch the floor.
You're right, it probably won't affect anything as the force is mainly downwards. Still, my team's mentors would throw a fit if we didn't isolate the electronics.