Its just one of the many things that makes racing a sprint car unique, but making chassis adjustments with torsion bars isnt difficult or time consumingin fact, compared to most coil spring setups, making a torsion bar change on a. Dirt track racing started in the united states before world war i and became widespread during the 1920s and 1930s using both automobiles and motorcycles. A good entry setup leaves you not having to do much input changes at all throughout the corner and able to keep the throttle pinned. Mar 01, 2004 dirt car setup is far more complicated than setting up an asphalt stock car. For instance, if you have a car with adjustable gear ratios you should be setting those appropriately for the specific track or you are giving up easy speed.
Dirt track racing is a form of motorsport held on clay or dirt surfaced oval race tracks often used for thoroughbred horse racing. In this video jon roetman ownerauthor of racers edge books shows you exactly how to use the racers edge race car setup software. Sheet downloads select a title to download pdf file wing setup sheet non wing setup sheet 305360 wing setup sheet sprint car specifications track setup torsion bar facts squaring the axles custom front axle diagram front axle diagram chassis left view chassis right view diagram a and b diagram c and d diagram e and f. I have learned a lot about chassis setup on many different track surfaces with many different types of cars. Jegs selection, value, lifetime support since 1960 if you enjoy kart racing on a dirt track, then youll want to keep some spare parts on hand. Most of the time when handling goes away on a car there is something wrong with the front end.
Dirt car setup is far more complicated than setting up an asphalt stock car. Thought about running lr at 15 deg and rr at 8 will this help. It will setup any dirt car with a double aarm front suspension and a solid axle rear differential type of rear suspension. That is rear steer, and in dirt track racing, rear steer is very important. I can give you a pretty good idea how to set up a ktlight or med.
Heres my first iracing dirt legends setup for lanier national speedway 2017 season 4. 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. Late 2017 longhorn chassis assembled at longhorn 10 races as a super, 19 races as a crate very fast car available minus drivetrain, radiator, shocks, seat with 50 lap old 4. This should be the easiest condition to drive and gain experience on a dirt track. This guide is primarily aimed at road course racing in cars, but will have some use for.
Download it once and read it on your kindle device, pc, phones or tablets. In dry slick conditions, rear steer is dialed into the setup so the car rolls. The ultimate racing car chassis setup guide and tutorial. Car hooks good on tacky but is terrible off the corners on dryslick. The log book is for record keeping of all your cars settings. Computer program to record your circle track and most any race car settings and results for future reference, analysis and comparison. Chassis tuning 101 matt murphys dirt oval chassis tuning guide preface over the last 17 years of my life, i have raced dirt oval all over the united states, on foam tires and rubber, hard packed and loose dirt. Basic chassis setup base setup normal track conditions the following settings are recommended as a starting point for a dry track with normal levels of grip not green or slippery and also not with high amounts of rubber on the track, causing high grip. Technical guide to the design and setup of dirt track race cars. The log book lets you record and track most any setting or condition on your car that you can imagine. Translated to road course driving, left when referring to the position of a part on a car means inside and right means outside.
Dirt track race cars can be very difficult to set up. In many of our articles on various aspects of chassis setup, we try to include both sides of the coin dirt and asphalt. In many of our articles on various aspects of chassis setup, we try to include both sides of the coindirt and asphalt. Book, dirt track chassis and suspension, 128 pages, paperback, each. It includes 40 pages of valuable information and helpful tips and covers both imca style modifieds and imca northern sport mods. Also dirt tracks offer up inconsistent surfaces, example. Another vital aspect to making your car turn well is simply the front end settings. Racers edge race car setup software use on any computer. This software calculates and saves all the important information. In either circumstance, it is useful for you to have a good knowledge of vehicle dynamics so that the handling of the car can be understood during setup and racing. All news classic truck muscle car open wheel oval track tbucket.
And what about running a short bar instead of a jbar. Hunt for grip unlike asphalt where generally there tends to be one line around a track the line on a dirt track changes as the track changes. Track important chassis settings with this 4 x 5 pocket size spiral bound book. Heres a setup for the dirt legends car at lanier national speedway that was made during 2017 season 4 by logan gibson. Jul 25, 2018 my take on answering one of the most frequently asked questions in this sport. The 23 best car chassis books, such as frisbie motorsports, legends race car chassis setup and street stock chassis technology.
This is a timing issue on when the tire patch accepts the load being transfered. A team has to simply strip the car of all unnecessary components and add a safety roll cage and go racing. For example, spring or torsion bar rates, crossweight, chassis tilt, wheel trackingspacing, wing position and angle, can all be used. The total novices guide to dirt track racing axleaddict.
Tech tips, open wheel, eagle motorsports, schnee chassis, race, sprint. Pdf dirt track chassis suspension download ebook for free. Includes chapters on dirt chassis theory and design, chassis tuning, setup tips and driving tips. If the car feels like it is more on top of the track rather than down in the track. Since this dirt series has only started this year in ga, most of the guys here dont have a ton of experience, and most are fighting with a very snappy loose condition mid turn and have started experimenting with a higher rear weight % to keep the car rotated. My take on answering one of the most frequently asked questions in this sport. High speed, modhigh rr tire heat, surface varies greatly, very slick. Grt late model standard car setup sheet grt late model signature series car setup sheet grt modified standard car setup sheet 2012 to current cars. This class is the most numerous on the local dirt track due to the fact that few modifications are allowed and a car can be brought from a local junkyard and brought up to racing standards. You wont find a more comprehensive dirt track magazine anywhere. Advanced setup and design technology for dirt track racing by the editor of circle track. However, there is no magic setup that will work on every car and every track condition for.
Each book has 50 carbon backed pages perforated for easy tear off. Use features like bookmarks, note taking and highlighting while reading setup any race car to win. The car is more than likely not getting the weight transfered into the right rear tire patch early enough in the corner. As long as the tires have near 1 to 1 traction with the ground, you should set up your race car like an asphalt car see the chassis setup at the rear for. You only need to get a few basic parts if you want to keep your kart in shape. Track optimization can be some of the least important or most important adjustments you make based on the car you are driving. Depending on the condition of the track and your driving style, there can be two very different approaches to your chassis tuning. The paperback of the dirt track chassis and suspensionhp1511. Chassis setup is the most important factor in having a fast dirt oval car. What used to be standard setups are a thing of the past for the top teams competing in dirt late models, modified, and even the stock classes. It may look like the car is transferring a great deal of weight to the right rear and that the car really is tighter than it was before.
So, when the rules state that you must have four working brakes and no brake bias controller, a simple fix is to install a bb in the front brake line coming out of the master cylinder. What used to be standard setups are a thing of the past for the top teams competing in. Speedway 174 iracing dirt legends setup for 50% track usage by osr. Many aspects of dirt track technology are covered here, including modified multileaf setups, dirt track car setups, circle track chassis and more. Our setup manual is the most indepth mod setup manual in the industry. If your track turns dry slick, having a larger fuel cell, like 28 or 32 gallon, will enable you to add more fuel and get a higher rear weight percentage if needed. To run a single setup throughout the day is not going to get the job done in this day and age. Apr 09, 2014 in this video jon roetman ownerauthor of racers edge books shows you exactly how to use the racers edge race car setup software. The more information you give us, the more we can help you out it is quite different depending on what class you race in. Car setups if you have a 2016 late model, please give us a call for the setup sheet. The key to a quick lap in dry slick conditions onedirt. Apr 01, 2004 the key, again, is to be sure to make changes based on your track conditions related to your type of car. Tech tips, open wheel, eagle motorsports, schnee chassis, race.
Browse the amazon editors picks for the best books of 2019, featuring our favorite reads in. On dirt, heavy front brakes cause the car to push up the track and slide on the dirt. Dirt track racers have botched this stuff up so bad, it took me 27 years to flush it all out of my head and rethink it all. So, if you want to learn how to design, build, set up and then race your dirt, car, this is the book for you. We recommend that you scale with remaining fuel that would be left in your car at the end of the race. Tips on choosing scratchbuiltlate model stock car books. With the log book linking to the circle track analyzer v3. The bottom line may be faster on a tacky track but then the fast line. Sprint car tuning with performance torsion bars for results. It will also setup sprintmidget type of cars using a solid axle front and rear suspension.
Youll want to have a wellstocked garage so that you can make improvements to your kart or sprint car. The car is more than likely not getting the weight transfered into the right rear tire patch. Dirt car setup tips dirt racing suspension guide circle. For immediate answers to your technical questions please contact krc power steering by phone at 770 42255 during our normal business hours 8 a. Practical information you can use to make your car faster, more reliable and more competitive. The information in this book is currently being used by top teams in touring late models, all modified divisions, stock clip late models, mini cars, road racing sedans and all other types of stock cars to setup their cars for asphalt and dirt track racing. The most complete racing car chassis setup tutorial guide available presented by shown above is a gaming expo fair in europe that held a contest for the best gamer team in a newly released 1st shooter game competition. This setup manual is intended for use by jet mod owners. Stock cars can be built from a prefab chassis or from a scratch design. The car needs to stick and turn the radius with the steering wheel, not having to use the pedals to get the car to turn the corner. Unlike almost all other dirt track race cars, sprint cars depend on torsion bars to help control the suspension rather than coil springs. Jan 23, 2019 this class is the most numerous on the local dirt track due to the fact that few modifications are allowed and a car can be brought from a local junkyard and brought up to racing standards. For immediate answers to your technical questions please contact krc power steering by phone at 770 42255 during. The key, again, is to be sure to make changes based on your track conditions related to your type of car.
Dirt car setup is undergoing a change, and has been for about five years now. Circle track setup book 50 sheet allstar performance. In either circumstance, it is useful for you to have a good knowledge of vehicle dynamics so that the handling of. Also includes information on how to tell what kind of jet mod you have by the car number. Nov, 2011 the car needs to stick and turn the radius with the steering wheel, not having to use the pedals to get the car to turn the corner. Stepbystep racecar setup guide paradigm shift driver.