358091 FAB IMPALA, NO UPPER MOUNTS. I would run either the pure stock or street stock class. In 2005 Victory Circle entered the world of dirt racing. 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. The setup we choose needs to be arranged so that the dynamics are balanced between the front and the rear suspensions. "One bad person can ruin it for everyone and that is just disrespectful", The I set the car up a particular way last year and won a heat race with my street stock in the late model class at HRP. It is this sliding scale situation that determines the stiffness of your front end. 2,224. If you want to know how to adjust iRacing Sprint Car cross weight, go here. Built to the same high standards of safety, quality and craftsmanship that has made Port City Racecars an industry leader. FOR 78-88 GM METRIC CARS. Chassis. Adjustment Guide - Medieval Chassis. Tire Tools. Poorboy, I think you're exactly right. 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. The upper BJ is trying to be forced in a forward direction and the lower BJ is trying to be forced in a rearward direction. Caster is best described as a vertical line that runs through the 2 pivot points in your car or trucks suspension. Save these setup files to C:\Documents\iRacing\setups\dirtstreetstock\. The lateral location of the third link can affect the distribution of load among the two rear tires that results from acceleration and antisquat. 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. Taipei Taxis, City Traffic Taiwan Street scene in the capital city of Taiwan at dusk with motion blurred taxis and traffic in the streets. However, tie down shocks are becoming less and less desirable. Roll Center or Moment Center. This is what I did to my Metric that won the 2012 UMP National Championship. Long exposure, Nikon D810. To download a copy of the E-book, simplyclick on the link below. The more third link angle you have, the more antisquat there is. I talk to lots of racers representing every form of circle track racing in every region of the country and beyond. There are some different lower a-arms and front suspension things to make them even better. A good handling car can make gobs of horsepower and hook it up. We do not want to try to solve turn entry problems with the brake bias, we only need to make sure the car stays neutral in handling when the brakes are applied. How to Open the Setups. Adjust the cross weight for more extreme conditions or different circumstances. No matter which stiffness you decide to go with, the most important aspect of setup is balance, and you achieve that balance with the correct combination of springs, moment centers, sway bars, and load distribution. There's a happy medium between running just the right soft right rear and going too soft. If you can use bucket and run a taller sprign thats a good way to go. The car will turn better and we will have more bite off the corners. This force is resisted by the ball joints and control amrs. Stretch Film Division. race pictures, racing news and season updates for the Frost Racing Team. Required fields are marked *. My truck has weight jacks and a stock 4 link. the metric cars at THR are at a big disadvantage in terms of track width, ride height, and rear suspension but if they were to be able to use a third link and panhard bar they can be very competitive even without weight jacks. One way is to have a rear spring split, where the right rear (RR) spring has less spring rate than the LR spring. And your choice of aluminum or steel fenders doors and quarters. I can only speak for THR, but we are not allowed to use adjustable shackles, or I should say we are not allowed to have shackles of different lengths. These are the general rules unless you are trying to "tie down" a corner. 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. I wondered if a 3 link could be made to work well without them. jp. Yeah! Unfortunately, most rule books that I have dealt with are very vague. We showed you the 3-link rear end last week. A three link with panhard bar using the stock lower mounts works fine. 97 to 2004 set up sheet for stock metric lowers ride height lf 3 1 2 to 4 rf 4 1 2 lr 11 1 4 to 11 1 2 rr 11 1 2 4 link amp 3 link lf 1100 rf 1000 these spring rates are a good starting point some tracks call for a little less and some for a more don t listen to your buddies on spring rates because different, the 4 5 / 20 If the car feels loose throughout the corner, lower both track bars evenly. LIT-721 80293NDP 2009-2015 Cadillac CTS-V HE. Conversely, if the car feels tight throughout the corner, raise both track bars. I have always believed in priorities because you can make gains faster when you solve the high priorities problems first. See all 6 photos. Antidive and antisquat are mechanical influences that can help our transitional phases of entry and exit. Christjohn likes to get to the track early and get his car set up so he can watch the races. To add weight to a given corner, raise the ride height at that corner or lower the ride height at an adjacent corner. 8. LIT-A950700006 80249N Ford F-150 LightningHarley HE. Much of the same information translates over to NASCAR Racing as well. Heck, if you are paying 20 bucks to get into the pits you might . 35810 FABRICATED CHEVELLE FRAME. However, they should be required to run he two stock lower rear trailing arms in their stock locations. Basically - after you finish the set up routine, the car goes in the hauler. We are at a crossroads at this point in time with setup technology in asphalt racing. This would mean we could align the driveshaft from a side view inline with the tranny shaft and the pinion shaft with no angular deflection. Hey I am looking for some guidance setting up my 4 link GM metric rear end. And, it must be economically applied. LIT-719 80292 C7 Corvette Radiator. Forum Actions: Forum Statistics: Threads: 1; I think that since SAS is more of a momentum track and the metric cars may not have such a disadvantage. And, of course, Terry chose to park it. SAS I seem to remember being faster than the sportsmans. Administrator. Also pinion angle with stock bushings. Bite Off The Corners The overall work that a shock does is to resist the rebounding of the springs and control the speed of compression. That move took this design to the next level. Pavement Modifieds. Hardcore Package - $5,700 (2023 Pricing) *Some components included in the package are not shown in picture below*. You can use your stock metric pitman arm and . Post As the car is lowered, the rear RC will generally move down. LIT-718 80291 1997 - 2004 Mustang Radiator. Good luck. That's just a thought, i don't know that for sure. That energy has to go somewhere, (1st & 2nd law of thermodynamics) so it can either go into tires causing them to heat up lose grip and wear faster, or you can try to take up some of that heat up into the brakes where it will be dissipated on exit and down the straight. With all the negative BS that tends to permiate these boards these days, I thought maybe we could talk about something real and constructive. The rear roll center is certainly part of the problem. Love it when people explain why somethings done rather than just saying this is how its done., Thank you Jeff! Yea how many years ago a1? IMHO they should be able to remove the two upper rear control arms and replace them with a single, fabricated, adjustable upper control arm (top link). Add to Cart. Refer to the images below. Thanks g dirt i will try that.im not totaly done with car yet just try to get ideas thanks, you are real close to what guys are running, but g is right, scale the car, i run leaf springs or i would tell you what i was running. It has been found that the misalignment of your tires/wheels presents serious drawbacks to a finely tuned chassis and setup. Front End Geometry Add Comment. 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. . Ive made the brackets on the rear housing (lowers) longer with trailing arm mounts that have 3 . Quick view. Would a 11 in be better or a 13 in spring in back be better. 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. Contact Us. This chassis utilizes our very popular double slotted strut style front clip. Bilstein has put together the ultimate Street Stock / Factory Stock Shock Package. so I ran a .185 valving. It was either cheat or park it until the rules change. So, we either lower the rear RC or soften the springs, especially the right rear spring, or preferably do both. What do you think Nick? Also has a anti roll bar added to it. Once you've made the entry to the corner balanced, check to see if the adjuster is centered. Pay attention to the left front tire temperatures versus the left rear. I thought these were street STOCKS? Still, teams want the most they can get out of their cars and if all of the above nine items are in order, by all means, go ahead with aero tweaking. We also might want to change the locations of the chassis and/or rearend mounts for the links. More has to be done to help the rear roll to match the front. We make it with either steel panels, or aluminium panels. I was thinking this setup might help because their are not alot of different way to adjust these cars other then stagger, offset, and maybe shocks. CRA street stock. Get Ready for a New Season of Gardening -Choose from Tomatoes, Peaches, Corn, Zinnias & More! That was it. This 7 shock kit includes shocks for every track condition with tips to help fine tune your racecar. 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. Check with the rules to see if it's even mentioned. The components that locate the rear end must be evaluated and set correctly. My name is Rodney Arndt, I have an associates degree in automotive technology. We can lower the rear RC by making changes to the mounting points. This guide is very similar to the NASCAR Racing setup guide. RAceman. This means keep track of weight coming off and going on. JavaScript is disabled. 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. "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. The Metric four-link Roll Center The metric roll center is quite high compared to other rear suspension systems, such as the three-link with Panhard bar, the leaf spring system, and the Watts link. SmartPad BP-30 is a race only pad for heavy braking on dirt, and intermediate needs on asphalt. A complete body comes with the fiberglass hood and roof, plastic MD3 nose and tail, a set of skirts, trunk, a box of rivets. The moment arm is 5.5 inches for the Late Model and is much easier to set up. Always try to start with the track bars first. 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. For the most accurate Setup and Tech Support, download our Scale & Setup Sheet, fill it out with as much information as you can and then fax it to us at 402-228-4796. Thank you for pointing out the obvious to me . I would trail brake or lift earlier. Both of these ICs act like hard points of resistance to lateral movement of the chassis. I was just trying to help a guy asking about what is done to the chassis. lowers are stock location on frame. We also discuss where we want the roll cente. racing on asphalt. From NE Ohio to North Central Mississippi, everyone has their own ideas and preferences for what they will plant this year. You need to locate the moment correctly, and the cambers . The control arm angles affect the rear steer and the third-link angle can redistribute load upon acceleration. On a three-link rear suspension you should have the front of your right-side control arm higher than the rear mount by 1/3 of the total amount it will travel in the turns. Home. Port City Racecars Road Race Chassis is a purpose-built racing machine. . This was taken at Butler Speedway in Michigan. . Street Stock Setups. The very last thing you need to worry about is your aero package. I would rather race 100% legal with a rule book that is written 100% clear and specific, that is enforced as it is written. Im lifting early and using zero brake. Cra bomber, turbo ,etc. Symptoms include bronzing on stems and petioles, curling and drying up of leave, This website uses cookies for functionality, analytics and advertising purposes as described in our. As you will gather from this book, setting up your car right and properly maintaining it is a lot of work. The car is loose mid to exit with not foward drive. Still having problems? If we can raise the upper front link mounts, we can lower the rear RC by lowering the upper IC. Estler's Mortgage Lifter is ideal for growing in northern climates due to its ability to withstand cooler temperatures better than other varieties. 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. When this book was originally published in 2001 it was specifically for GM Metric chassis (78 or newer Malibu, Monte Carlo, Regal and Cutlass cars) racing on asphalt. This setup guide also has new information based on the changes that go along with the new version of the sim. I better get the torch and welder dusted off! The number one reason a car will be tight and not want to turn is because the front end is not designed properly. Also the rear springs on that car Dave 24, are either Landrum 200-175 or Afco 194-166can't remember, Only if you are racing anywhere except Bonneville.lol Chad. 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. by RonL Fri Jan 02, 2015 12:36 am, Post I measured ours at close to 20". I got a 1000 on ebay 150897831883 at like $5.00 I would do 1100 RF, 1000 LF, 225 LR and, 175 RR but that was on big chevelle or impala chassis. There are ways to do that without changing the handling at other points around the racetrack. Get it right or don't get it at all. Quote. The driveshaft doesn't know which view these angles are resulting from, just that they are equal and opposite. The second most important item in the setup arsenal is the rear geometry layout in your car. Then it's done! Nick might be a better theory guy but I don't think that just adding a panhard bar will get you there. I appreciate the lead. Since mustangs have a similar rear suspension would these same mods work? Plan to win in a repeatable fashion. 70030. Next is engine set back if allowed. It must show a consistent gain in performance and a logical ideology to the bulk of race teams. ; this was with all four stock trailing arms. Understanding the relationship between the rear roll center on these cars and the setup will help us find a more balanced setup. Take a look at a metric street stock rear suspension video. That is the essence of shock technology related to handling influences. . 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. We were allowed weight jacks and after market uppers in front also. On a metric four-link car, the four control arms determine the rear moment center height too. It might help to leave it unattached on ovals. Fox80. The effect is huge. 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. But just wondering what the heck guys are doing to these metric street stocks to make em so fast. set the tone for how the parts and setup will work. Stock chassis that has been: Boxed, second "inner" frame tube added, suspension pickup points doubled and gusseted, rear frame notch (for future, wider tires), cross braces at front, rear shocks, and rear of frame. Each setup has a life cycle or a time frame in which it will work before we run into a stopping point with it. Compare that to an asphalt Late Model car with a rear Panhard or J-bar and a 10-inch rear RC height and a 15.5 inch CG height. If the car feels tight on corner entry, raise the left track bar. JP, are you saying that you were allowed to run it in that form - stock lowers with an aftermarket upper link? The left side suspension usually is designed with about half the angle of the right side in a conventional design. I once drove a metric on both dirt and asphalt. Shocks Trends are a part of this learning curve and greatly influence some, but not all racers. Each end has its own moment arm length and resistance to roll as well as other factors. We have been softening those setups over the years, but never intended to go to coil bind or bump rubbers. 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. It costs just as much money, if not more, to run poorly, so you might as well learn to run well. Setup Tips for Metric on asphalt. It's the average height of the instant centers that determine the roll center height. 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. Sometimes weather differences will require changes to either tighten or loosen the setup. Copper has been known to kill tomato plants if placed directly into the stem or base, but placing copper wire around the wound may not have the same effect. Jul 25, 2011. The overall general rule is that the angles between the driveshaft and both the pinion shaft and the transmission output shaft need to be equal and in opposite directions. . Then should I use brakes more? The idea is to steer the car using different height holes for the rear control arm mounts. Even when clear rules exist, the track officials are often reluctant to enforce them. I drive both a metric (my truck) and a leaf spring car (ss). The driveshaft alignment is critical from the standpoint of mechanical efficiency. I can't tell you how many times I have refined the MC location in a car and had it totally change the way the car turned, for the better. Welcome, Guest. The front moment center (MC) location plays a huge role in how the front end wants to work. Conversion to Race Car When we convert a Metric four-link suspension to a racing application, we need to be aware of several important factors. Disconnect the sway bar and zero (unload) it. They arent usually as good at spotting little modifications to every single part of the suspension. 321. Welcome to STLRacing.com, home of St. Louis Motor Racing News. If the car feels loose on corner entry, lower the left track bar. In order to slow you must lose (kinetic) energy. I built Couchenours 99 car . Bilstein Stock Car Shock Package Fits the popular metric chassis (4) Front shocks (3) Rear Shocks Stock Mount front and rear Additional Features Nitrogen Gas . Posted 5 weeks ago. We run on street tires and can not move suspension mounts (viasably ) I won the championship last year with a car . I have had a lot of feedback from teams who did the same with the same results. In the end there is a ton of stuff out there, everyone seems to have something that works. 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. This develops more crossweight as the car squats on acceleration. 3. -3 . 03 0@ 34-.=- 2 ++(+'o $ (&%q qqqqqqqqqqqqqqqqqqqq ,&%q qqqqqqqqqqqqqqqqqqq qq (,%q qqqqqqqqqqqqqqqqqqqq ,,%q qqqqqqqqqqqqqqqqqqq qq Full of fuel, everything done, full of oil, lead bolted down. Designed and built with one thing in mind, WIN RACES. What Are Russet Mites? Here are what we consider to be the 10 most important areas of chassis setup with No. I ran a metric street stock at HMP for a number of years and was definitely not at a disadvantage. Remember, we're still using stock components, we're just making small relocations of those points. I dont really recommend it. 4. It is not advantageous to have the rearend steer to the right at any time on asphalt. 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. by rick7343 Fri May 01, 2015 5:14 pm, Post Always try to start with the track bars first. If he was at the track and saw the car run he would know that it worked ( by the way it also worked at Eriez ). Only at teamsimkins.com. The metric cars can use different size spring spacers as well, so the playing field is already level in that respect. Street stock, pure stock, sportsman, factory stock. If the car is tight under throttle, or driving off the left rear, invert the spring perch offset adjustment procedure above. I think with the panard bar and 3rd link the metric cars. Letting the metric cars run Camaro spindles would be a step in the right direction. Loss of efficiency can rob power from the drivetrain due to the generation of vibrations and harmonics that are also damaging to the bearings. The upper IC is to the rear of the rearend and the IC for the lower links is well in front of the rearend. With allot of experimenting I found a way to really get the car to hook up. In short, you'll get more rear grip by lowering the rear RC. When the track is cooler, you may want to loosen the car some. We cover all forms of racing in the Midwest featuring racing news, results, photos & videos. Race Car Street Stock Set Up help manual book. Special Discount Cost- $24.95 !To download a copy of the E-book, simplyclick on the link below. On the metric chassis the roll centers, from what I understand are mainly influenced by ride height, because we can't change control arms ect. is applied to the front bumper & air dam of the car covering the openings for air flow to the various components that are cooled through Ill provide a couple of tips that will help you get your car tighter or looser, whichever you need. I have little experience on dirt but can definetely notice this! I noticed the camaros can arch or de arch springs. I don't really encourage that method. The dynamics of the moment center and the effects of camber change have been explained before. In Stock. Lift earlier, and/or drag the brake just a little bit on entry. Ill also answer a couple of common questions: These changes are applicable to all asphalt oval cars. For example, if your initial setup is 52 percent cross-weight, and you want 50 percent cross-weight, lowering the right front or left rear corner will decrease cross-weight percentage. Conclusion The Metric four-link rear suspension is here to stay for a while. Note the new cross weight and the ride heights. Over the years I have had lots of feedback that most . I never felt good about cheating but when everyone does you need an even playing field. We had no idea how popular and successful this line of chassis would be. Alignment issues are defined as: A. rearend alignment, B. contact patch alignment, C. driveshaft to pinion/transmission alignment, and D. engine alignment. I would say 99's priorities worked just fine. I don't get too many reports of continual, repeated wins and successes. View Profile View Forum Posts Private Message Visit Homepage 02-25-2021, 09:09 AM. $1,700. I always knew that chassis set up had to be based on some proven theory, but I could never find a book that could tell me what that theory was. Wheels. A level panhard bar ( same mounting height on both sides) means force is vectored laterally to the tires. Can a 3-link be used effectively without weight jacks? Filter by. Polyethylene Film / PE Sheet The cross weight adjustments should work on all dirt cars except the Sprint Cars. It may not display this or other websites correctly. the radiator. Greetings guys, Im new to the site. After payment you will be directed to a download page. If there is, try to adjust the brake bias to eliminate the adverse condition. We must develop ways to create more rear traction on acceleration only. About Us. Might go25- 50 pds more on each side and the left side should be more than the right side. If it is too far to one side, then changes to the brake master cylinder sizes and/or the pad compounds might need to be made in order to maintain a centered-bias adjuster. This will help keep your ride heights in the ballpark. Sliding the MC left and to the inside of the turn makes the suspension softer. 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. ford 9' rear end w/disc brakes, stocks, springs, gauges just add motor and transmission and go racing. You need to keep the ride heights as close as possible to where they were before you started. 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. 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. .220 to .235 would be fine without a quickner. But there is still some changes to be made from track to track. When the LF is too cold, the RR spring is too soft. Make small adjustments, about one half of one percent. Johnny likes a softer feeling car, front and back. I'm thinking about building a B Body for dirt track racing. 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. Your email address will not be published. I would suggest going to www,4m.net to the tech board. This is our 1988 Monte Carlo Stock Appearing Body. I'll start out with what seems like the obvious to me - the rear suspension. 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. We have continually pressed these issues because of the extreme importance they have. Before you start your season, you need to create your JP is that the car you wadded up and broke your leg? Dec 24, 2005 at 5:33am. I don't know much about spring adjusters hidden or otherwise but I'd say they could be made to work. 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. Posts: 72. But if you cant 11 inchers is all you can go. That troubles me. Stock cars using the metric-style four-link rear suspension usually need to do this just to achieve a balanced setup with the high rear moment centers in those cars. LIT-722 C7 Z06 Corvette Heat Exchanger 80294NDP. 30 day Money Back Guarantee!- If you don't learn something that helps you go faster, email me and I will refund 100% of your money back. The cameros have been better then the metric cars at SAS for years,they used to let the metric cars raise the spring pockets in the rear if I remember right,I don't remember what else they were allowed to do though to be competitive. the force of air. Most guys that are fast there are fast everywhere. Street Stock. 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. Customer is to bring a clean non-sandblasted frame when picking up the chassis. Of the other two, camber is well-recognized, but for all intents and purposes, the least-understood . Sometimes the handling of the car might not be to your liking. You can then make fine adjustments with the sway bar preload if desired. Adjust all four spring perch offsets to change the cross weight. March 27, 2015. Swap Option: Medieval will build the chassis using one of our sandblasted frames. Because these cars are being used in great numbers in the Stock classes of racing here in the U.S., we need to have a better understanding of the design and how it relates to the setups.
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