The wedge does pick up to the underside of whatever it is crushing but a lot of the weight of that still remains on the ground. I mean it would increase the forces on the wheel axles I think, but I'm guessing by a lot less than if the bot was flipped into the air and landed wheel first for example. I don't think it had much to do with it in this case though, I was only driving it around, not crushing anything at the time.