This design was a success. The tires gave the rope a good grip. Since we put two legos on each side of the tires it created a barrier making the rope stay in one place.
The picture above shows how we attached the two motors together.
Our design was a success. The motors were able to travel up the rope and was able to pull up the nxt. If we were to increase the power of the two motors then the product would have been able to travel all the way to the top.