Toe is adjusted primarily at the tie rod. Toe is a useful adjustment to ensure that as you turn the wheel in the corner you get optimum camber angle and that both tires are turning the car as evenly as possible. ‘Neutral,” or zero, means that the tires are completely straight and there is no difference It is measured as ‘toe-out,’ which means that the front of the tires point outwards, and ‘toe-in’ which means that the front of the tires point inward. The third axis, ‘toe,’ is the measurement of the difference of the distance between the same spot on a tire on the front and back. The portion of the tire’s tread called the ‘contact patch’ is kept at a useful maximum to keep control of the car at the highest cornering speed possible. You can adjust camber by loosening the bolts that connect the spindle “hub assembly” to the lower portion of the strut ‘shock and spring combination device.’ Once the camber is set, tighten the bolts, and sometimes weld them in place.Ĭamber is a very useful adjustment because as the car goes into the corner, the force causes the outer wheel to compress and the friction on the bottom of the tire in contact with the racing surface causes it be to forced inward (or outward on the inner wheels). As the top of the tire deviates from zero, it is measured as positive “outward” or negative “inward.”Ī good way to think of this is if you placed a dollar bill on the top of the tire and it leans towards you, that is a good thing, and therefore “positive.” The opposite can be said about negative camber. At zero degrees of camber, the tire is exactly straight up and down. ![]() The second axis, ‘camber,’ is how much the tire leans in or out. Due to that, I will omit it from this discussion. ![]() The first axis, ‘caster’ is usually unable to be altered without significant alteration to the stock mounting locations. Have a working fire extinguisher available and nearby.Įach corner of the car moves in three-dimensions, or axis. Wear gloves when dealing with sharp items and glass. Wear safety glasses, especially when hitting/striking/grinding/working where items can fall into your eyes. Before spending time making an adjustment, ensure that is allowed by the rules. Having your track’s rules printed out and available for review is still a very good idea. From the premier divisions to the support classes, having a well-handling race car is supremely important to getting to victory lane.ĭue to the lack of adjustment options in a stock 4-cylinder chassis, racers must often be creative to get as much speed out of their car as possible.įor setup, there are many rules that limit or prohibit certain modifications and adjustments. This is the building a 4-Cylinder race car. In this, the fourth of a five part series, I will continue to show you what’s required to get you from the grandstand to the cockpit of you own race car. Column By: BRETT HORLACHER / RPW – CLIFTON PARK, NY – Racers are often found in the shop, late at night, and even at the last minute placing well-researched and hopeful setups into their cars.
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