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The weight shift causes the front suspension to travel, and therefore impart a greater force onto the steering linkage, causing an added bit of toe-out. To get the exact toe amount at the tire, first divide the front-to-rear difference by the distance between the targets (front-to-rear) of 336 (two times the 168 inches). If these widths are not the same, the rearend is toed and must be straightened before continuing. With the lasers attached to the front hubs, level the front lasers (vertically) and reposition the targets so that they are equal distance from the center of the front hubs. As you adjust the rearend side to side, there is a possibility that the alignment will change as the rearend moves laterally. Generally, toe-out is useful on heavier cars that have a lot of load transfer under braking and heavy cornering. Subtract the compensation amount from the offset read at the RF wheel to find how far from the string the RR wheel needs to be in order to line up the right side tire contact patches. Schell Wins First iRacing World of Outlaws Sprint Car Race, Bergeron Controls Title Chase at Williams Grove, Defending Champ Job Back on Top of Porsche TAG Heuer Esports Supercup at Barcelona, Team Redline Goes 1-2 at 2021 BMW Sim GT Cup Opener From Daytona, iRacing World of Outlaws Sprint Car Preview: Williams Grove. The best way is to use a laser alignment system to measure how much each front wheel turns and compare the two. Leave the right side alone. With the string, simply measure to each side of the tire with the tape and make both measurements equal by adjusting the tie-rod length. Toe-in is also used on dirt to great effect here in Pennsylvania with sprint car racing. Do the measurement several times to ensure accuracy. ... Track Alignment on N Scale Layouts. (Special thanks to Mike and Kristal Loescher), By clicking Sign Up, you agree to the  Terms of Use. However, this can also make a car that is inherently difficult to keep on a straight line (because of the huge RR tire) even MORE difficult to keep on the straights. Mike designed a SIMPLE and HIGHLY ACCURATE alignment system. This must be done each and every time we use the tool to check alignment. If there is a difference, either your head blocks are off, or your track is out of line. All Rights Reserved. . There used to be only one reliable way to align a race car. Set four targets, two on each side, at equal distances forward and rearward from the vertical center of the rear hubs. . Circular Mill Alignment Advice on fine adjustments to a circular sawmill for accurate cutting performance. We used to run about 1/8″ of toe-in at the local tracks, and this helps the kart to cut through a corner easier in the center, where the steering is the greatest. World of Outlaws NOS Energy Drink Sprint Car Championship, World of Outlaws Morton Buildings Late Model Championship. No matter what kind of motorsport racing there is, there will always be a reason to optimize the contact patch of the tire to gain maximum grip. Published: June 26, 2017. For a tight, quarter-mile track, the added toe due to Ackermann effect should be about 1/16 inch, or about 3/8 inch difference at the targets. Long, sweeping tracks: toe-out is generally better. CHASSIS TUNING FOR ASPHALT. Oval Track Alignment Squaring Tools in … You must compensate for this slight distortion by finding the extreme high spot at a point equal in height to the hub height. Taller upper ball joints are now available to correct the front suspension geometry. That is little effort expended to make sure your car will track correctly and that misalignment will not interfere with performance. Where chassis in the other classes are purpose built, the bomber stock chassis is generally a twenty to thirty year old street car using twenty or thirty year old technology. The difference in distance will reveal the amount of toe present in the front wheels. This means as the wheel rotates, the outer edge of the tire will wobble slightly. Many times I have run across a car that has all the right ingredients of roll center design-a good balance of front and rear suspension design, and proper weight distribution. The laser system is one that attaches to the wheel hubs (models for both Wide 5 and 5-on-5 hubs) and can be rotated 360 degrees, and leveled both horizontally and vertically. That much is easy to understand. Knowledge of it is important for all types of auto racing, not just circle track. Well, common-sense physics will tell you that the faster you go, the more force you’re going to put on something. Anyway, this year i got a new rear end housing 61" centered, with a 3" offset wheel on the LR and a 4" on the RR both of my rear tires are narrower than the front. $20-$50 (1) $50-$100 (1) $100-$250 (1) $250-$500 (11) Filter Options . Equal measurements to the tire front and rear means the rearend is perpendicular to the chassis centerline. In the last article, I talked about the uses of toe and how it affects both drivability and front-end dynamics. Reattach the front lasers and rotate the right front laser so that it shines on each target. When I started racing circle track, I needed alignment tools for my front wheel alignment. Measure between the two target centerlines on each side. An alignment that is improperly set can cause your car to want to pull to one side or another or require more effort to make steering inputs. We will go through the process using both methods in order to show you how to perform each step. Once you're convinced your car is aligned, you can concentrate on the other important aspects of your chassis setup. All corners are left turns. A set of tires not toed correctly will create a lot of drag, much like applying the brakes. Step 4 - Once the right front (RF) wheel has been adjusted to point straight ahead parallel to the RR hub, level the RF laser (vertically) to shine the point on the floor. A good, well-balanced setup is a product of making sure all of the elements are in place. If they're all the same, then it's something else. Adjust the left-side tie rod to set your toe. Take the rear targets and place them 14 feet in front of the front hubs, and line up the centerlines with the laser points. However, this situation is typically isolated to circle track racing where cars run on banked race tracks. Conversely, if your feet point out, that’s negative toe. They need all the help they can get to control the weight transfer. Roof Railing for a '33 5-Window by Jess (MacKichan) Gasper - Posted in Tech 3/31/2017 Jess M talks about the finishing touches she put on the soft top insert of her 1933 5-window Ford coupe. The laser can be removed from the hub adapter and turned to check if the laser pointed to the same spot on a target. For the camber thrust to be working with you in the corners, the top of If you started out with the LF wheel straight ahead, dialing in 1/8 inch of toe at the tire will require about 3/4 inch of movement of the laser point at the front target. This entire process should take only about an hour or two if there are several team members helping. This shows the alignment, side to side, of the tire contact patches, the beams being equal offset distances from the centers of the contact patches. The best way to use this guide is determine the problem you have first then see what the track conditions are like and then determine if you are on a small stop and go type track or a faster –momentum type track. Actually, yes. It is recommended you go over the hub surface with a flat file to eliminate any bulges or edges of metal that would cause the laser to be improperly aligned. Around the pit area, a trick that is used to swing the rear-end of a powerful sprint car around these flat-banked, tight-cornering, and narrow tracks is a trick called “right-front wedge.”  Essentially, the teams toe-in the RF tire a little more to make the rear flick out in the center, allowing the driver more drive off the corner on a wet night or if the fast line is around the inside rail. Truck wheel alignment services are available at 205 TA Truck Service locations from coast to coast. At the hub height, if you line up the tire sidewalls, the RF tire contact patch will be outside that line due to the negative camber present in the RF wheel. In order for the Front Roll Center track adjustment to be practical, it pays to worry less about the detail of the specific Roll Center location and focus on the Instant Center and your goal for the chassis adjustment. Attach the laser to the rear hubs. 4. Compared to the ultra-sophisticated late models or sprint cars, the bomber stock type dirt track cars are prehistoric. Free Shipping (13389) On Sale (58) ... Wheel Alignment Tool, Two-Wheel System with Toe Plates, Camber and Toe Measurement, Caster Measurement, Built-In Tape Measures, Aluminum, Kit. https://www.hotrod.com/articles/ctrp-0905-proper-race-car-alignment 2. Step 2 - Once the rearend has been toed straight ahead, shine the right rear (RR) laser so that you can measure the offset to a straight framerail at the front and rear or two places offset from the centerline of the chassis. We’ll discuss this later. autosport involves going as fast as possible, in order to do this, the car’s chassis and suspension is going to change attitude, whether it’s a hotlap at Atlanta, F1 at Silverstone, or even a top fuel dragster twisting and bending its rails off the line. If you adjust your left side tie rod so that the difference in distance between the front and rear targets is 1 1/2 inches, you will have 1/8 inch of toe. Back to the garage! That looseness will stay with the car throughout the turns, especially ruining the turn exit. Adjust the toe settings so that you have the desired amount of static toe in the front end. Someone else has figured out how to make their tires work better than yours. Before this can be accomplished, you must address the critical area of chassis tuning. The Ford clip with 4" offsets across the front is 76" wide, so 77" when i … These plates, as you will soon see, are not accurate enough for this measurement. Dirt racing tires come in hundreds of different sizes and compounds to match what a team expects a race to unfold, and if you’re crafty about it (and the rules allow), you can create your own tread patterns with a razor knife. Step 6 - It is now time to measure for the amount of Ackermann present in the steering system. We have talked about the importance of proper steering related to Ackermann as well as the alignment of the rearend. In circle track racing, “tie-down shock” and “easy-up shock” are two common terms used to describe valving characteristics of a shock. Front to Rear Tracking - The tire contact patches must track straight ahead from front to rear. Even small amounts of toe are not acceptable. In general, big sweeping tracks: more toe-out; tight-turning corners: a bit more toe-in. Cars that do not have load transfer, such as legends cars, can be run with toe-in to great effect at tight-cornering tracks, such as Martinsville or Langley. CircleTrackSupply specializes in motor sports racing, circle track parts, tools for the shop and at the track on race day, dirt track parts, Imca, Late Model Stock Car, ASA, Hooters Pro Cup, NASCAR Weekly Racing Series, Busch East, Grand National, drag ra The unit we used is called a True Laser Track. Remove the front lasers from the holders and align the centers of the four targets with the beams from the rear lasers. It's harder to get why the steering wheel acts as a brake, but let's try to figure it out. Track Order. True Laser Track is the Best, the Easiest and the MOST Accurate Way. With both front lasers pointed ahead, line up both targets so that the points are exactly on the centerlines. Poor alignment can ruin an otherwise great setup. So in other words, the faster the car around a corner, the more wheel spin, the more distorted the tire! Circle Track Setup: The Case for Caster. The general trend in all of circle track racing has been to make changes to our setups and car construction to make better use of the four tires, especially the left front tire. Now, check the toe at the rearend. Front-wheel drive gets a bad rap with car enthusiasts. Now, we will show how to align all the critical parts so the wheels will track true to the path of the race car. Adjust the Panhard or J-bar length so that the right-side laser beams (tire contact patches) are one point. Compare Related Articles. Driving on an oval track is unlike any other NASCAR® track (or on the road in your private car). If the rearend is pointed to the left of the centerline of the chassis, the car will be tight through the middle and off the corner. In short, camber is the lean of a tire. However, this is old news. Increasing the angle at the RF upper A-Arm raises the Front Roll Center and moves it to the right. It covers a wide variety of topics that are listed below. A properly set alignment will compensate for what is known as road crown – roads are sloped slightly to cause water to run off more quickly – while still being able to maintain a straight track. This can only be done accurately with the laser system. 1. It’s that simple. To counter this nose-dive, a bit more toe-in will give the driver an added sensation of control and response through the steering column. Simply put, toe is the angle that the front tires point in or out. Calculations show that for those tracks with fairly large radii (much more than was used to design for passenger cars for turning the corner at the stop sign), a small amount of added toe is needed to properly align the front wheels to their individual radii. Turn the wheel the approximate amount that the driver does when negotiating the turns at the racetrack. Adjust the rearend so that each measurement to the frame is equal. Sign up to get interesting news and updates delivered to your inbox. That's still a viable way to do it-and necessary for lower-budget race teams. In Circle Track, we stress the importance of moment center design and having a balanced setup to give the car what it wants. … It takes a lot of force to stop a car, especially so when they weigh upwards of 3,000 pounds! On all circle track cars, stock cars to modifieds, when a wheel is cambered, the tire generates a lateral force known as "Camber Thrust." It saves time and energy to put the most important items at the top of the list and work on them first. In most cases, you need to line up the right-side tire contact patches. Repeat this entire process often, especially after kissing the wall or being involved in a crash. Four-wheel alignment can be the final setup parameter that can take you to the front or keep you in the rear of the field. Look at the chart to estimate how much to compensate for the camber. Look down at your feet. https://www.hotrod.com/articles/ctrp-0401-chassis-alignment On an 85-inch tire, this diameter is 27.05 inches. - The distance from the ground to an inner suspension arm pivot point will also accomplish the above goal. Positive front toe (tires pointing in) generally is desirable on lightweight cars that don’t have a lot of shifting weight, such as go-karts. This means both right side tires are lined up. Translated to road course driving, "left" when referring to the position of a part on a car means "inside" and "right" means "outside". By Bob Bolles, Circle Track Magazine . Negative camber is the characteristic generally desired in performance driving. So if the racing demands only the use of one certain tire, then you don’t have to worry about getting beat by another tire, but rather by someone who figured out how to get better performance out of their tires. Heavyweight cars: toe-out. ###Change at the Track: - Make small changes at the track, and make only one change at a time. How Does It Work? Basically, caster is … When using the string, you must compensate for the camber of the right front wheel which moves that tire contact patch out. You either measured to the tires at hub height or measured at the floor by creating right triangles on the floor. You’ve heard about torque steer and “wrong-wheel drive” and might write it off as being for grocery-getters, not real performance cars. Chry Lower Slug w/ Nut 1.5 per Ft. Spindle Checker Slug - Lower - 1-1/2 in/ft Taper - Steel - Black Oxide - Chrysler Lower Ball Joints - Allstar Spindle Checkers - Each Wheel Alignment Tools (12) Turn Plates (1) Get Results. Toe plates that might slip slightly cannot come near the amount of accuracy required when dealing with fractions of a degree. Will help the car turn better. Racing tires are designed to stretch to meet the demands of their design. This would be around 3/32 inch difference in the amount that each wheel turned (LF turning more than the RF), measured on the targets or 0.097 in decimal inches. Use toe plates for the analog method. Center the laser beam on each target and measure the distance between the centers at the front and also at the rear. On most quarter- to half-mile racetracks, little Ackermann is needed to make sure the wheels are tracking inline with the radius of the turn for each wheel. Part Number: TNH-3300 Track geometry is three-dimensional geometry of track layouts and associated measurements used in design, construction and maintenance of railroad tracks.The subject is used in the context of standards, speed limits and other regulations in the areas of track gauge, alignment, elevation, curvature and track surface. Chances are, it’s through the turns, where the chassis of the car is changing force and distorting the tire. So is this a good thing? The difference in distance between pairs of targets is now divided by 168 and multiplied by the tire diameter to find the Ackermann toe that is added to the static toe settings. type track and the (2) will represent a faster –momentum type track. the compromise is that TOE –IN will produce an increase in scrub. Step 3 - Center the front steering rack. Alignment Services Offered: Most car builders will align at least one framerail parallel to the intended centerline of the chassis. Basically, caster is the “rocking chair” (if you will) of a wheel assembly. Circle Track (287) New Product (75) PowerSports (42) Pro Packs (32) Marine (18) Jr Dragster (4) Savings Central . We used 14 feet as a convenient distance that would clear the rear of the car, while not extending too far to the front if the space were limited in the garage. More on this in future articles. Translation: Toe-in will scrub straightaway speed and develop heat in the front tires faster, which can be a good thing in cold weather, but in a longer race, will cause the RF to warm past optimal temperatures. Using the laser, at the left front (LF) hub, align the left-side targets with the LF laser at the front and rear and at 14 feet (168 inches) from the LF hub center. Remember to be careful and accurate and do the measurements several times to be sure of the numbers. Michael Loescher, chief instructor for FinishLine Racing School and creator/inventor of the "True Laser Track" is a lot like his mentor John Browning. The key to maintaining accuracy in a laser system is to be able to check the tool to make sure the beam is truly tracking at right angles to the mounting device. A dirt track street stock race car is hardly refined. In a “one-tire rule” racing series, front-end geometry is more important than “open-tire” series. Simply put, there are three different ways, or dimensions, to rotate in the world: (1) front to back, (2) side to side and (3) up and down. Rotate the RR laser so that its point shines next to the front laser point on the floor. The TA Truck Service network is your alignment expert. The analog method would have you use toe plates with degrees marked on them. Whole-car alignment is critical. We offer a complete inventory of available parts and experienced, professional technicians ready to keep you on the road and your vehicle running smoothly. However, toe-in also has some disadvantages. Circle Track (7) PowerSports (2) Savings Central . Measure the distance between the front targets and then between the rear targets. An organization’s vision and mission are one of the top priorities that the management and the employees want to accomplish. Circle-Track Setup: What Is Toe, And Why Should You Use It? November 13th, 2013 by JaimeB. Just the expense of building & setting up the car, and just getting what you need to set every aspect of the race car was costing a fortune. You can measure over to the tire to check the rearend alignment in relation to the framerail. JaimeB. This may not be apparent with a 1/16″ or 1/8″ adjustment, but if you add 1/2″ toe-in, you’ll see what I mean! You can use toe plates to do this. Allstar Performance offers quality Circle Track Racing - Asphalt Suspension at a great price, check out our website today at allstarperformance.com. Toggle menu. Since we’re just rotating a wheel assembly, it’s going to affect how the tire acts upon the track surface. Since we’re just rotating a wheel assembly, it’s going to affect how the tire acts upon the track surface. Upon locating the high point, mark it with an arrow and then rotate the tire (front or rear) so the arrow is at the top pointing straight up. Copyright © 2021 iRacing.com Motorsport Simulations, LLC. If you lengthen the rope and swing the bucket so that the force is the same, the circle the bucket inscribes will be larger, and the bucket will have to move faster around the circle if it balances the force. True Laser Track (TLT) makes Alignment Simple! You’re not getting beat by better technology, you’re getting beat by a better setup. View (20) $69.99 More Info. It may be located on the right side or at the weight box on the left side next to the driver. This measurement can also be done with a string by using a square to come down to the floor, then measuring over to the frame or centerline of the chassis to align the string with the framerail. Since most (!) Ackermann Adjusted - The last alignment priority is making sure you have very little Ackermann, which is the creation of additional front toe as the wheels are turned. This increases camber gain similar to doing the Guldstrand mod, and the taller outer tie rod end helps reduce bump steer to stock levels. Oval track racing. Price Range . When we use the term, we’re referring to static negative camber. February 12, 2007 ... #2 and measure. That is, the wheel and tire should exhibit some negative camber while sitting. Your information will be collected and used in accordance with our  Privacy Policy. 3. If using the laser system, thoroughly clean the surface of the hubs and make sure there are no protruding threads from the bolt holes. If the point where the beam strikes each right side target is not an equal distance from the target center as well as on the same side, adjust the length of the right side tie rod to align the right front wheel parallel to the rear wheel. Circle Track Car Setup Guide. September 13th, 2013 by ... ride height, trailing arm/four link settings, alignment settings, corner weights, and sway bar adjustments. This means the rearend is perpendicular to the framerail and hopefully the intended centerline of the chassis and the installed body. Then, multiply this number by the diameter of the tire (tire circumference divided by Pi or 3.1416). Step 5 - It's time to set the static toe at the front wheels. Multiply the toe-per-inch by the tire diameter and you have the amount of toe in the front end. Allstar Performance offers quality Circle Track Racing - Dirt Suspension at a great price, check out our website today at allstarperformance.com. With most production cars set up to strongly understeer from the factory, many track alignment settings are designed to move the cars closer to neutral handling, by making it oversteer more than street settings would. Toe Settings - Proper toe settings at the front and the rear are important. Tight-cornering tracks: more toe-in. We always try to think of the elements of a good, winning setup in terms of priority. One of the pivotal factors in achieving this feat is proper team alignment. Problem is, this is racing, darn it, and that means we need to go faster! Simply put, there are three different ways, or dimensions, to rotate in the world: (1) front to back, (2) side to side and (3) up and down. Once midrack (or midbox with drag-link steering) is found, lock the steering column with two vise-grip-type pliers. Use a jackstand to hold the tape steady and rotate the tire, noting the distance from the stand. Note: this page refers to circle track driving. It has all the necessary components, except for one thing-it has a serious alignment problem. This camber thrust can work with you or against you in the corners depending on your front end alignment and suspension geometry. While it is probably true that a car out of alignment is more forgiving on dirt, it is important on both dirt and asphalt to have your wheels properly aligned. If your teams’ alignment is not in sync with the organization’s goals and objectives, it becomes quite challenging to fulfill the tasks. Interested in special offers, free giveaways, and news? Customer Service Since 1952 in ... Speedway Front End Toe Alignment Gauge Tool. Be careful how each person holds the plates. The number should be low, around 1/64 inch of added toe for a half-mile track. For example, on turn entry, if the rearend is pointed to the right of the chassis centerline, no amount of setup tuning will prevent the car from being loose. You used a string. Shop Oval Track Alignment Squaring Tools and get Free Shipping on orders over $99 at Speedway Motors, the Racing and Rodding Specialists. Gain would be 1.5 to 2.5 degrees of camber through travel. This is done by turning the steering wheel lock to lock, then back half the number of turns from full lock in either direction. In past ancient setups that were prevalent in the early ’90s and before, the left front tire did little, if any, work. Every car and track is different and these ball parks give are a simple view of old school camber Since toe-in forces the car’s momentum through a slightly narrower front wheelbase, the car can feel more unstable in straight lines. Ackermann is important because it can ruin an otherwise great setup. The points do not need to be exactly on the target centerline, only equal distance from the centerlines. Seen it in Circle Track and some other places. Also, as the iRacing tooltips in the garage states, adding TOE should increase stability . For the analog (string) method, the nylon string we used was from the local hardware store. This is the toe amount that exists in one inch. Lightweight cars: toe-in is generally more useful for quick steering boxes. The laser uses targets at each end of the car. If your toes point in (pigeon-toed), that is positive toe. This may take several tries to get both the rearend square and the right-side tire contract patches lined up. Step 1 - Check both the front wheels and the rear wheels for runout. Acknowledgment: this page was mirrored from Trackpedia. However, that is only one of the three basic geometric ways to move a tire on a race vehicle. This is the fourth video in the asphalt set #DA. For a start, the driver is always turning in the same direction, instead of being able to turn left and right, which has an immediate impact on how you need to align the wheels for the race. - Remember that changes in stagger, tire pressures and springs will change the ride height and alter the cross-weight percentage. You must recheck to make sure the rearend is still perpendicular to the framerail each time you adjust it. The problem is that no amount of manipulating other setup components will overcome a wheel-alignment problem. I have done testing, the results are HERE The best compromise for most First Gen Camaros is to just add a .5" taller upper ball joint along with a .5" taller outer tie rod end. Most sanctioning bodies are already onto this knowledge, so they’ve implemented tire rules to keep costs low and the racing field more competitive. Rear Alignment - The direction that the rearend is pointed in relation to the chassis can dictate how a car will behave in the turns. With standard suspension travel and a static camber of 3.5 degrees negative you would achieve about 5 to 6 degrees of camber in the center of the turn. The final alignment will show the right-side patches are in line with one another along with the rearend being perpendicular to that line. Since the chassis is going to change, it will put force on the wheel assembly, and therefore the rubber of the tire, distorting it from its original circular shape. Do the same for all head blocks. A quicker and more accurate way to align the car in all areas is by the use of a laser system. Note where it is positioned in relation to the centerline. WEIGHT AND BALANCE FOR …

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