Yes, that was a great video, I learned something too! (also amazing the stuff they did before computer NLE software, etc....
Huie - You have been trying to learn a lot these past few weeks and many have been very helpful and patient.
Please take this as a suggestion:
"It is better to be silent and thought a fool, than to open your mouth and remove all doubt!"
The differential is an important principle when dealing with 2 drive tires. You should watch it a few times. If it still doesn't quite make sense, please give Google a try or maybe even and encyclopedia or two at your local or school library.
Again, I'm only wanting to impart a little "constructive criticism" so you'll learn what questions to ask and when.
Keep up the learning, you'll get there! :thumbsup: