If you would apply basic, simple logic you would come to the conclusion that what you state is absolute nonsense.
If the wheels would be lifted from the belt, they could no longer drive the prop. If the prop isn't driven anymore, the cart would be "sucked back" by that flow. In the meantime the prop slows down, decreasing it's momentum (which you are so fond of). If the cart would make contact to the belt again, it would even fall back more since the prop/wheel coupling acts as a brake then due to the lost momentum.
But we can clearly see that the prop is spinning, that the cart does not move back and that indeed the prop supplies enough energy to push against the air to hold the cart in place.
Really, humber, get your stuff straight. As i pointed out in the post before, you are simply contradicting yourself. You want indeed to literally glue the cart to the belt so it moves backwards with it. However, this is not how it works.
Oh, and maybe use some spell checker in the future. By now we just can't be sure if you just make simple spelling errors, or deliberately introduce these errors just to give yourself enough wiggle-room. And to confuse others. You really make it extra hard for others to follow what you actually mean.