Hi, I am Racecar J. I am going to show you some basic stock car setup. First we must bring up the two most basic handling terms, tight, and loose. When your race car is tight, you will be steering into the corner and your front end will not want to go where you are pointed. It will push towards the outside wall. However, when your race car is loose, the front end will go where you intended to, and the rear end will break free and slide, possibly causing you to spin out. In summary, tight is when your front end hits the wall first, and, loose is when your back end hits the wall first, neither are good, we must balance the car for a two turn better. A balanced race car has more rear end weight than a normal car. Also, a balanced race car will have more left side. We adjust these weights for an ideal 53-54% cross weight. Cross weight is a ratio of right front weight to left rear weight. If you have too much cross weight, your car will be tight. If you have not enough cross weight, your car will be loose. Now let's talk about stagger. Stagger is when the right side tires are taller than the left side tires. The bigger the difference in the tires, the larger the stagger. Since we are only turning left, the left side tires have a shorter distance to travel. That is why they should be shorter, and the right side tires should be taller. Too much stagger will make the car loose. Not enough stagger will make your car tight. The correct amount of stagger varies for each track. You use the blah blah blah radius blah blah blah, pi are round, blah blah speed, blah blah equals the required stagger. The calculation is not important, this is just a beginner course. Let's move on. Stagger will affect cross weight. Once you set the stagger for the track you will be racing on, you will have to adjust your cross weight again. This is a constant problem. But do not worry, you will get used to it. Once you have a good balance of stagger and cross weight, you must drive the car to learn about tire temperatures. That is my favorite part. I will be right back. Do you like my ride? Pretty sweet A? Once your car is balanced, you can find tune the handling with tire temperatures and pressures. Hot tires get slippery. Cold tires have no grip. You must have evenly heated tires so that you will have good grip, with no slip. Use a parameter to measure tire temps. The right side tires are expected to be hotter than the left side tires, but the rights should only be 20% hotter than the left's. If your average tire temperatures are within the 20% specification, you can now check for uneven heating. If a tire is hotter in the center of the tire than it is on the outside edges. The tire is bulging in the center. This tire has too much air in it. Alternatively, if the tire is hotter on the outside edges than it is in the center, the tire is under inflated and you must add some air to it. Tire temperatures can give you lots of information about your car. We have only scratched the surface on how this information can be used. Here, I will make you a list. Traction, bite, pressure, overinflation, underinflation, caster, camber, oversteer, understeer, the list goes on. Tire temperatures are a great diagnostic tool. Now that you have a basic understanding of race car handling, I would like to see what you have learned. Please tell me what it is called when the back end of the race car slides through the corner, possibly hitting the wall first. If you said loose you are correct. Good job, hooray for you. That one was easy, let's try a harder one. What would a balanced race car have for an ideal cross weight? No cheating off others. You can do it. Think. Think. If you came up with 53-54%, you are a rock star. Do you want to be my new crew chief? Mine makes me do silly videos. He says they are good PR. In summary, loose is bad. Tide is also bad. A balanced cross weight of 54% is good. Stagger is hard to calculate but very important. Tire temps tell all. I need a new crew chief. I hope you enjoyed my video, time for a victory burnout. Woohoo! See ya!