Just about all the available setup options that you can adjust on a real WC car can be adjusted in the sim. If the camaros are allowed adjustable rear shackles and are allowed to use different lowering blocks then they already have weight jacks and are allowed to adjusted rear roll center. The front end takes time and effort to get the bump steer and caster gain within a tolerable amount, you have to move the upper and lower control arm mounts, cut the left side lower control arm, use special length ball joints, etc, etc. SR32 - Developed for the right fronts of dirt cars where low grip is needed to help build bias in the front brake system and help the car turn better when you have to use 4 wheel brakes. "ULTIMATE" Racing Car Chassis Setup Guide and Tutorial. The last time I drove that car I put a short third link (11 inches long) and a long panhard bar after that any adjustment I did to the car it did what it was supposed to do. It may take a few test sessions to help you determine your balance, but if you observe the indicators correctly, then tuning the car for dynamic balance can be done. Welcome, Guest. where can i get info on the set ups for a metric chassis short track dirt car, Do Not Sell or Share My Personal Information. If you need to know the height of your Metric four-link rear roll center, then send an email and I will send you a free calculator to use. What do you mean by spring loaded trailing arm, i've always had that idea, but not sure if its something thats available or something i would have to fab up. I had a very experienced racer come out and help us one time and he said the problem he saw with the car is the rear end looked as if it was shifting to the left by a couple inches. This force is resisted by the ball joints and control amrs. Take a look at a metric street stock rear suspension video. 2. I remember qualifying times in the 19.6 to 19.7 range. This setup guide also has new information based on the changes that go along with the new version of the sim. Turn the wheels to the left all the way, make a mark with the steering wheel, now count the turns it takes to go to full lock the opposite direction. However, that is only one of the three basic geometric ways to move a tire on a race vehicle. Leaf springs are important when towing heavy objects.Bear with me here, this digs a little deeper into how leaf spring suspensions work. Add to Cart. We ran the stock lowers but boxed them and put in better bushings if I recall correctly. If you find that the left rear is the coolest tire on the car, then you have a setup balance problem where the rear is too stiff. Each end has its own moment arm length and resistance to roll as well as other factors. I see the times at CCMS are identical, THR the truck .5 sec quicker. Wonder how fast it would be if I changed the locations. The effect is huge. Race Car Street Stock Set Up help manual book. Good luck and keep the rubber side down!!! We even did pretty good with it in the THR LLM class back in `99. As the rear end rotates on acceleration, the left wheel moves rearward more so than the right wheel, creating a slight amount of rear steer to the left. This configuration is common in General Motors cars built in and around . Just giving the car more rear traction, period, does not help us if the car becomes too tight in the middle of the turns and we could end up with the reverse of what we need. ; C1 - Designed for medium to low brake temperatures and provides good cold bite while being rotor friendly. The use of softer front springs, larger sway bars, and big spring split in the rear has swept across the country for more than five years now with mixed results. What I hear I feel is representative, although those who dive head first into the BBSS mix not because of a perceived and measured expectation of success but because of the "see monkey, do monkey" attitude, will never share what they are doing. Got protested and is now in limbo! Love it when people explain why somethings done rather than just saying this is how its done., Thank you Jeff! There is one IC for the upper links and one for the lower links. 5. That was it. Car went anywhere he wanted and was quick time, won the trophy dash, heat race and main. 8. A high rear roll center causes a short moment arm in the rear suspension and will stiffen the rear suspension similar to installing very stiff springs. Negative aspects might include excessive bumpsteer (more than 0.030 bump in or out in for each inch of travel is considered negative by most designers), excessive Ackermann (more than a 1/4 degree added steer in either front wheel in 10 degrees of steering input is considered excessive), and incorrect steering quickness. Special Discount Cost- $24.95 !To download a copy of the E-book, simplyclick on the link below. The idea is to steer the car using different height holes for the rear control arm mounts. Contact Us. Its hard to say without more information. Add to Cart. The pad is best used on IMCA style modifieds, the fronts of "Outlaw" style modifieds, drag racing . However, they should be required to run he two stock lower rear trailing arms in their stock locations. Yea how many years ago a1? Circle Track Setup: The Case for Caster. In the same manner, we can lower the rear mount of the upper link and lower the upper IC. The reason I say that with confidence, is because I have gone up against more aero efficient cars with setups and body configurations that were aero-deficient and still out ran them. My Metric front end setup. Keep It Fast and Cheap. I would suggest going to www,4m.net to the tech board. Be careful not to overdue that. 358101 FAB . Most Metric cars I've evaluated have rear RC's up around 14.5 inches off the ground. The rear roll center is certainly part of the problem. We run on a semi flat 1/2 mile asphalt track. Create New Wish List . 5. Its important to make even adjustments, meaning you should make the same number of clicks on each spring perch. Please Login or Register 03/04/23 at 12:37am, what front springs to start with and whats a good baseline for wieghts the minum is 3100 what do i need for leftside,rear,and cross. First, we don't want to restrict the movement of the arms too much. It is this sliding scale situation that determines the stiffness of your front end. The front moment center (MC) location plays a huge role in how the front end wants to work. With allot of experimenting I found a way to really get the car to hook up. The preferred way to adjust the cross weight is by moving weight around. ANYBODY KNOW OF ANY STREET STOCK RACING CHEATS/TIPS. So, in most cases, we need to run a softer spring in the right rear. I would trail brake or lift earlier. There is no one big trick to make your care handle better, rather its all the little things done right that will make you consistently fast. These desires are directly influenced by the spring stiffness, location, and spring split, the sprung weight the system has to support, along with the moment center locations and other settings. Dial In Your Metric. If the car's center of gravity was say 16.5 inches (around average for an asphalt car that has been lowered), there would only be a 2-inch moment arm to try to roll the car. About Us. Additionally, modern pennies are only 2.5% copper, so older pennies should be used instead for better results. How to Raise Cross Weight in iRacing Setup. I will post as I no longer race, the biggest thing is the angle of the upper and lower control arms in the rear, you need to understand roll center and instant center to be able to adjust it correctly. Both of these ICs act like hard points of resistance to lateral movement of the chassis. Hardcore Package - $5,700 (2023 Pricing) *Some components included in the package are not shown in picture below*. We always start with the front end geometry on any race car. One guy said it come up off the ground two feet. In an effort to clear up some of the confusion over all the setup options included within NASCAR Racing, I decided to put this guide together to help you better understand what, why, & how adjustments are made in the sim. As for stock arms they worked just fine ,and didn't cost anything. competition. Make small adjustments, about one half of one percent. Location. What do I do if the car is loose or tight throughout the corner? I would like know what the ic would be on a g body with a 9 inch in the rear with stock suspension. A trend must prove itself in order to stand the test of time. The moment center must be located correctly for your type of racing and the cambers must be set, again toward your setup style and track conditions. Setup Tips for Metric on asphalt. 1 being the most important. So, we must make due and set up these cars the best we can. I measured ours at close to 20". If your vehicle of choice utilizes a McPherson strut style front suspension, then your 2 pivot points would be . The Antis This will help keep your ride heights in the ballpark. We have done a lot with the front roll center and cant wait to see how it does, after that, i found some legal stuff for the rear that we will try. Thank you for pointing out the obvious to me . JP is that the car you wadded up and broke your leg? This guide covers much of the basics for the less experienced sim racer as well as a troubleshooting section that should help reduce your lap times. Download the Jet Mod Scale & Setup Sheet Here! That extra effort is what separates the front runners from the rest of the field. Probably to the guys that are beating you! Unbalanced setups exhibit easily observed characteristics, such as unusually high degree of wear and temperature on one tire versus the other tires. Long exposure, Nikon D810. Although Im sure youre backing up your corner and lifting early, it can still wear the right front because the tendency is to lift as late as possible which can cause a faster corner entry than you might realize, causing the RF to heat up. var contact = "Contact Us" When we recently set up our Project Modified for our first race, we followed a simple list of to-do items that are the same for every race car I ever set up. Pay attention to the left front tire temperatures versus the left rear. Looking forward to the tips for Dirt Oval racing! What do you think Nick? We can add the stiffer bushings to most of the points, but leave several, one at the top and one at the bottom, as a rubber bushing to absorb the torque created in roll. They have all kinds of articles and how to write ups on what to do with a metric four link to make it work better, how to use things like bump stops, progressive springs, gas shocks, sliding ballast, to make a car faster and more drivable. A 1 1/2-inch top view misalignment with a 44-inch driveshaft results in nearly 2 degrees of angle at both the tranny and the pinion shafts. After the race I had people come to our pit area and ask how did you get a metric car to lift the left front off the ground?" LIT-718 80291 1997 - 2004 Mustang Radiator. In situations where the exit portion of the track provides less traction and/or the corner is more flat, we might need to develop more rear traction upon acceleration. The metric cars at THR may be as competitive as the camaros but at CC they were not even close untill we were allowed to change to 3 link and a panhard bar. That's just a thought, i don't know that for sure. . 122. I know enough about suspension geometry and how to achieve it, but what i have been playing with now is CG and where it works best. Full of fuel, everything done, full of oil, lead bolted down. If this component on your car is not right, then the whole car will suffer, no matter what else you do. Remember, we're still using stock components, we're just making small relocations of those points. I ran a metric street stock at HMP for a number of years and was definitely not at a disadvantage. We had LF 1000, RF1300, LR 200, RR200. Pavement Late Models Stock Cars. Send your request to bob.bolles@sorc.com. as for the powertrain setup, 40 over 350 basically all stock with 882 heads and a 450lift isky oval track cam, brand new factory q-jet, running a 3-speed saginaw factory clutch/PP pulling the track in first gear, 2.54 with a 2.73 ring/pinion, not very big on power for the setup works VERY well together for this track, if you can keep it . These are the general rules unless you are trying to "tie down" a corner. I also was involved with beta testing for NASCAR Racing Simulation Games. I'm thinking about building a B Body for dirt track racing. LOL. Yeah! I drove the #01 ss for two years and tried everything I could think of within the rules and it was a hard job to keep the car in control because of the binding of the rear suspension. Your email address will not be published. Setup Changes For The Metric four-link Even if we can lower the rear RC to around 13 inches, that's still a high rear RC. The sportsman car i had at SAS was always a fast car and it was coil spring 4 link no panhard bar and no weight jacks. 35809 FABRICATED IMPALA FRAME. Your statement that the 3-link is what the metrics needed to level the playing field is the type of feedback that tech. Antisquat results from the third link trying to straighten out, or become more horizontal as the car accelerates and the rear end desires to rotate. We had no idea how popular and successful this line of chassis would be. men need when considering these types of changes. sj_valley_dave wrote on 05/01/09 at 12:12pm: I spoke with Dave24 after last weekend, he dropped the fronts down to 700 LF and 800 RF and got the cross down to 45.8%, pulled the bolt out and floated the RR spring. Next is engine set back if allowed. Then should I use brakes more? We can lower the rear RC by making changes to the mounting points. Welcome to STLRacing.com, home of St. Louis Motor Racing News. Once you have evaluated all of the above and feel fairly confident that the car is set up correctly, you should then work to tune the transitions into and off of the corners with the shocks. If we can lower the Metric RC to 13 inches, we would increase the moment arm length in the rear to 4.5 inches and that's a huge improvement in compliance. Thats the theory and the science anyway. Did you see anything interesting? Save these setup files to C:\Documents\iRacing\setups\dirtstreetstock\. A 1/2 inch height change from level can make significant handling changes. I'm a former NASCAR short track driver and league administrator for SASCAR. This configuration is common in General Motors cars built in and around the 1980's as well as some Ford cars, such as the Thunderbird, from the same time period. Most of the ideas in this book are perfectly legal for any rule book. Current Stock: Quantity: Decrease Quantity: Increase Quantity: Save to Wishlist. The message I get from those who have worked this trend for a sufficient number of years is one of the following two types: 1) a continuing and constant search for balance in the car and a loss of success on the track, or 2) a returning to the more conventional setups because they have experienced number 1 above. Some of the names, most notably in the asphalt Street Stock springs, are different, but the process is the same. I just think frames are harder to come by, so are stock blocks, so the old stock and hobby classes are a dying breed. Home. Since the spring promotes rebound and resists compression as inherent properties, then the shock rate of compression control must be less than the rate of rebound control. Conclusion See All - Best Selling. This guide is very similar to the NASCAR Racing setup guide. Not sure how much traffic this post will get here. Contact Us. So, it might be the best for asphalt racing to run as low as possible or as much as the rules allow to create a lower center of gravity. Required fields are marked *. So, we either lower the rear RC or soften the springs, especially the right rear spring, or preferably do both. As far as I know, all of the iRacing asphalt cars are adjusted the same way. I was wondering if anyone out there had any experience circle track racing a mopar unibody. Did not get DQ'd but after the race the promoter told him that too many other cars were complaining and he would not be able to run the car in that class. Shocks Try to at least get to 53% front and 53% left weight with out adding ballast behind the rear wheels. A slight amount of rear steer to the left has been shown to help provide more traction at the rear and bite off the corners where it is needed. Page 1 of 1. I never felt good about cheating but when everyone does you need an even playing field. Wheel Accessories. MSRP: $515.99. Forum Actions: Forum Statistics: Threads: 4; Posts: 10; Last Post: I-44 Speedway-Jeg's Master of. 10702FMI FRAME & CAGE - FAB IMPALA MOD. Try to understand how aero downforce is created and then configure your car so that you take advantage of every area where you could produce more downforce. Street Stock Setups - Custom iRacing Setups and Paints for dirt oval and asphalt oval cars. Adjust all four spring perch offsets to change the cross weight. Every year, Jack asks drivers for input regarding rules changes for the following year. ; this was with all four stock trailing arms. Johnny likes a softer feeling car, front and back. We also need to establish a ride height that will both be appropriate for our type of racing and also help to establish the best roll center height. I don't really encourage that method. I better get the torch and welder dusted off! We even did pretty good with it in the THR LLM class back in `99. With all the negative BS that tends to permiate these boards these days, I thought maybe we could talk about something real and constructive. If the car feels loose on corner entry, lower the left track bar. The set-up really planted the RR tire. It would be nice if we could change the rear suspension, I have done a lot of research on it and have found some info, there is just not a lot legally that can be done with it. Add Comment. Sometimes the handling of the car might not be to your liking. Strictly asphalt street stocks and parts. S3 - Street Stock - USA $4.00; S3 - Street Stock - Lanier $4.00; S3 - Street Stock . From NE Ohio to North Central Mississippi, everyone has their own ideas and preferences for what they will plant this year.