asphalt metric street stock setup

Take the RH arm and cut the tube off at the cross shaft, cut 1" off the tube and weld it back onto the cross shaft. The less angle the better. Now you have to compensate with spring change. Divide that in half for the center of the wheel. . Each setup has a life cycle or a time frame in which it will work before we run into a stopping point with it. 8. Often overlooked in the mainstream, dirt track racing is one of the most exciting forms of tire-scorching car racing action. I have had a lot of feedback from teams who did the same with the same results. Sort by. "One bad person can ruin it for everyone and that is just disrespectful", The The effect is huge. But just wondering what the heck guys are doing to these metric street stocks to make em so fast. We even did pretty good with it in the THR LLM class back in `99. Roll Center or Moment Center. Antisquat is detrimental to corner entry. Ackermann is easily checked by using a laser system or strings. The problem on dirt is the high rear roll center. LIT-718 80291 1997 - 2004 Mustang Radiator. You might try a little trail braking. Eliminate most of your bumpsteer and Ackermann and install the correct steering ratio for your track that would suite the driver. 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. Plan to win in a repeatable fashion. If you want to know how to adjust iRacing Sprint Car cross weight, go here. Wonder how fast it would be if I changed the locations. Im using a 9" floater, locker, 60" w/centered pinion. As the car is lowered, the rear RC will generally move down. In 2010 we made a good car better by a design change with the introduction of the Chevelle front clip. I can agree to use a LR instead RR. I see the times at CCMS are identical, THR the truck .5 sec quicker. There is one IC for the upper links and one for the lower links. 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. Jul 25, 2011. Coreless Stretch Film; Pre-Stretch Film; Hand Roll; Machine Roll; Jumbo Roll; Industrial Plastic Division. That's one thing I've really never understood about some street stock classes that don't allow weight jacks. It is a low acid tomato with a unique flavor that has been described as sweet, yet slightly tangy. This variety grows best when grown alone and can reach up to 12 feet tall. competition. I was also wondering, are there any tricks you have to make your tires wear slower without damaging speed. This is very "old school" but when applied with a balanced setup, very effective. Quote. The very first step in the process of preparing for the new season is to consider all performance-related items and how they worked last season. Roughly 8-10 degrees of third link angle is sufficient to promote antisquat and not hurt your corner entry. These components include the radiator, oil/transmission coolers, & brakes. 5. You can then make fine adjustments with the sway bar preload if desired. Whats the dominant front clip, and what are they doing with these metric rear setups? A Setup To-Do List to Get You Started . You need to locate the moment correctly, and the cambers . It is this sliding scale situation that determines the stiffness of your front end. A trend must prove itself in order to stand the test of time. So, in most cases, we need to run a softer spring in the right rear. Reply #9 - 05/01/09 at 8:00pm. 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. It must show a consistent gain in performance and a logical ideology to the bulk of race teams. View all S3SS. PREMIER. As you will gather from this book, setting up your car right and properly maintaining it is a lot of work. 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. I ran a street stock/sportsman from 1995 to 2000 with a metric frame. 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. Sometimes weather differences will require changes to either tighten or loosen the setup. 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). Built to the same high standards of safety, quality and craftsmanship that has made Port City Racecars an industry leader. there are a lot of knowledgeable guys there. METRIC CROW FOOT Other Items Online Auctions at EquipmentFacts.com. 321. Welcome to STLRacing.com, home of St. Louis Motor Racing News. We also might want to change the locations of the chassis and/or rearend mounts for the links. Still having problems? This develops more crossweight as the car squats on acceleration. 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. Do not attempt to open the setup file in Windows. Plan out changes that could help improve performance or durability. ; C1 - Designed for medium to low brake temperatures and provides good cold bite while being rotor friendly. The front moment center (MC) location plays a huge role in how the front end wants to work. in Exotic Race Cars on a Real RaceTrack, Copyright 2000-2023 Wheels. Good luck. By Bob Bolles, Circle Track Magazine . The preferred way to adjust the cross weight is by moving weight around. . 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. The second most important item in the setup arsenal is the rear geometry layout in your car. 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. Setup Tips for Metric on asphalt. It has been found that the misalignment of your tires/wheels presents serious drawbacks to a finely tuned chassis and setup. SmartPad BP-30 is a race only pad for heavy braking on dirt, and intermediate needs on asphalt. Metrics can be competitive IF they are permitted to address their four-point rear suspension problems. We are only talking about a difference of 0.040- to 0.060-inch, but that is enough to help stabilize our car on exit and provide added bite. That troubles me. That is the essence of shock technology related to handling influences. 70030. Load the setup in the iRacing simulation under Garage - My Setups. When you enter the corner you are going to slow down. race pictures, racing news and season updates for the Frost Racing Team. 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. 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. I once drove a metric on both dirt and asphalt. the radiator. Probably to the guys that are beating you! 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. 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. rolling chassis. My Metric front end setup. 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. This setup guide also has new information based on the changes that go along with the new version of the sim. The bottom line is that at mid-turn, each end will want to roll to its own degree of angle. Moderators:FeliciaMC88, UFo Race Championship. Filter by. Those cars are coming around becoming competitive. men need when considering these types of changes. 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. Ive read alot of stuff, some of it usefull some of it crazy. Understanding the relationship between the rear roll center on these cars and the setup will help us find a more balanced setup. The influence of the location of the front MC can be compared to a sliding scale. A very soft spring would need more compression rate and less rebound rate, whereas a stiff spring would need a lot of rebound rate and much less compression rate. This guide was awesome! . Swap Option: Medieval will build the chassis using one of our sandblasted frames. They should be matched up within a couple of degrees of average temperature across the tread. Not sure if there is a standard for metric cars but I havent found any specs on it. racing on asphalt. I never felt good about cheating but when everyone does you need an even playing field. The RC height will move with vertical movement of the rear of the car. Polyethylene Film / PE Sheet We run on a semi flat 1/2 mile asphalt track. This force is resisted by the ball joints and control amrs. Contact Us. In Stock. Each end has its own moment arm length and resistance to roll as well as other factors. Dial In Your Metric. 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. Over the years I have had lots of feedback that most these concepts and ideas work great on dirt, on front wheel drive mini stocks, on almost any street stock, production typerace car. And, of course, Terry chose to park it. Disconnect the sway bar and zero (unload) it. Forum Actions: Forum Statistics: Threads: 1; Shocks affect the motion of the corners of the car and therefore the placement of loads during transitional periods. 358091 FAB IMPALA, NO UPPER MOUNTS. The images used are taken from the iRacing Super Late Model setup screen. 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. We also discuss how to identify the cause and the best treatments for each type of pest. The rearend needs to be aligned at 90 degrees to the centerline of the chassis and/or to a line through the center of the right-side tire contact patches. 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. 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. Yeah! lol Stocks are turning the same times as emods at most tracks these days, maybe not the top 3 emods, but pretty much the same wich is crazy. Circle Track Wheels. .220 to .235 would be fine without a quickner. How to Lower the Cross Weight in an iRacing Setup. 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. This is what I did to my Metric that won the 2012 UMP National Championship. In order to perform the set up routine the car needs to be completely ready to race. 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. The cross weight adjustments should work on all dirt cars except the Sprint Cars. Rear Geometry Here are some recommendations. They should also be able to run any panhard bar. Trends are a part of this learning curve and greatly influence some, but not all racers. Aero Package 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. Much of the same information translates over to NASCAR Racing as well. Your statement that the 3-link is what the metrics needed to level the playing field is the type of feedback that tech. jp. When thisbook was originally published in 2001 it was specifically for GM Metricchassis (78 or newer Malibu, Monte Carlo, Regal and Cutlass cars) racing on asphalt. On a metric four-link car, the four control arms determine the rear moment center height too. It's that time of year again when gardeners all over the world are planning what to grow in their gardens. JavaScript is disabled. How do I adjust the cross weight in an iRacing setup? 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. Plan your shock layout by comparing the stiffness of one to the other corners and to the spring stiffness at the corner you are trying to control. JEFFREYS Fabrication is coming soon!!! As far as I know, all of the iRacing asphalt cars are adjusted the same way. 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. LIT-722 C7 Z06 Corvette Heat Exchanger 80294NDP. Letting the metric cars run Camaro spindles would be a step in the right direction. Basically, if the suspension mounting points must remain stock, the leaf spring cars will dominate (at least on ashpalt.). Brake Bias Its not necessary unless your own a road course. 3. LIT-721 80293NDP 2009-2015 Cadillac CTS-V HE. Vintage/Classic/Historical Engine Tech, 3V Performance Engine & Valve train Development, Race Cars & Parts - For Sale or Wanted, Asphalt circle track metric GM 4-link questions, Re: Asphalt circle track metric GM 4-link questions, https://www.physicsforums.com/threads/r ss.326355/. Designed and built with one thing in mind, WIN RACES. The very last thing you need to worry about is your aero package. Use the "new" 7 inch arm on the RH and the 8.5 on the LH. Over the years, most of the things that I have learned about racing, I've learned the hard way. Dirt Modified IMCA, Local Tracks. X-Y-G METRIC STREET STOCK / SPORTSMAN HEADQUARTERs 704-784-5353. Pavement Modifieds. Street stock, pure stock, sportsman, factory stock. I would get the metric arms from Speedway P-N 910-31134-RH (LH) they are 8.0 and 8.5 long. If the car feels as if it wants to break loose under throttle in the center or on corner exit, or drive off the right rear wheel (wheel spin), increase the cross weight. 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. jp. I would like know what the ic would be on a g body with a 9 inch in the rear with stock suspension. So, we must make due and set up these cars the best we can. Posted October 3, 2005. Nick might be a better theory guy but I don't think that just adding a panhard bar will get you there. Conclusion The idea is to steer the car using different height holes for the rear control arm mounts. LOL. Why Lower The Rear RC? If the car feels tight on corner entry, raise the left track bar. 507-386-3930. Ill provide a couple of tips that will help you get your car tighter or looser, whichever you need. The amount of resistance is directly related to the degree of side view angle we put in our control arms and the amount of brake force used. Has gone 1.29 60 ft on spray, has 28 10.5 et street tires on it also. Conversely, if the car feels tight throughout the corner, raise both track bars. Get Ready for a New Season of Gardening -Choose from Tomatoes, Peaches, Corn, Zinnias & More! Just trying to help someone. Full of fuel, everything done, full of oil, lead bolted down. Brian Wise. I used 13" springs with buckets welded in the frame on the rear.Car will be to high without buckets trying to use 13" springs.We used straight 6 valve shocks on the front and straight 5 valve shocks on the rear.Don't mess with split valve shocks if you are a beginner.this spring setup . 1980 Camaro bomber class street stock crate motor ford 9inch. I was wondering if anyone out there had any experience circle track racing a mopar unibody. I'm curious what everyone's thoughts are on what it would take to allow the metric cars to be competitive without giving them too much. That was it. The settings, including the moment center location, really do dictate how all of the other parts and pieces of setup will work. Bump Springs Tech. Customer is to bring a clean non-sandblasted frame when picking up the chassis. 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. 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. Port City Racecars Road Race Chassis is a purpose-built racing machine. When the track is cooler, you may want to loosen the car some. Thanks a lot for making it. Car has stock location rear links and stock links , different bushings . If your vehicle of choice utilizes a McPherson strut style front suspension, then your 2 pivot points would be . The left side suspension usually is designed with about half the angle of the right side in a conventional design. 1. 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. by rick7343 Fri May 01, 2015 5:14 pm, Post 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. Even when clear rules exist, the track officials are often reluctant to enforce them. Shocks I never got to the experimenting stage on asphalt. Through trial and error, I spent a lot of time, money and energy learning how to get a race car to go around the corner and end up in victory lane. If you could slide the MC to the right, or outside of the turn for you road racers, the front end will get stiffer. Adding neoprene bushings to all of the connection points will unnecessarily restrict movement and cause the chassis to be stiff in roll. Samuel232. A three link with panhard bar using the stock lower mounts works fine. Of the other two, camber is well-recognized, but for all intents and purposes, the least-understood . the force of air. How about just adding a panhard bar to the stock four-link setup? Quick view. How to Open the Setups. "ULTIMATE" Racing Car Chassis Setup Guide and Tutorial. What do I do if the car is loose or tight throughout the corner? I would suggest going to www,4m.net to the tech board. 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 backAfter payment you will be directed to a download page. Add Comment. 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. These cars were meant to ride down the road nice not be fast on dirt, so you have to redo all of the mounts, change the length of the trailing arms, use hiems and/or rubber bushings or even spring loaded trailing arms to build traction. Adjustment Guide - Medieval Chassis. Lee Christjohn of Antigo, WI knows what it takes to win street stock races. Dec 24, 2005 at 5:33am. However, that is only one of the three basic geometric ways to move a tire on a race vehicle. Before you start your season, you need to create your Less fuel equals faster speeds. The car is loose mid to exit with not foward drive. Christjohn likes to get to the track early and get his car set up so he can watch the races. How do I tighten or loosen the car on exit? Remember, we're still using stock components, we're just making small relocations of those points. Refer to the images below. Add to Cart. state doesn't have. 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. SR10 Dirt Oval RTR. 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. Got protested and is now in limbo! The artistry comes in when you actually do it. This will loosen the car, and that's undesirable, especially on dirt. I measured ours at close to 20". 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. After payment you will be directed to a download page. 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. Most Metric cars I've evaluated have rear RC's up around 14.5 inches off the ground. So, there is a limit to how much you can get away with and still have a decent corner entry. Happy New Year. 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. In the same manner, we can lower the rear mount of the upper link and lower the upper IC. It was either cheat or park it until the rules change. Mod Four Tech. Online: $349.99. 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. Ill also answer a couple of common questions: These changes are applicable to all asphalt oval cars. If the car feels loose on corner exit, lower the right track bar. Too low a ride height could cause the car to bottom out. Yea how many years ago a1? They aren't expensive to buy or install, WB shocks are the same price as stock mount ones and bolts allow for much easier tuning. Don't get me wrong, I like our leaf car for obvious reasons, but it would be cool to see a bunch of metrics out there running well also. How do I tighten or loosen the car on entry? Greetings guys, Im new to the site. I talk to lots of racers representing every form of circle track racing in every region of the country and beyond. I ran a street stock/sportsman from 1995 to 2000 with a metric frame. So, again this year as in past years, we will present what is admittedly the formula for success related more for the conventional and what we call soft conventional setups mainly because these are the ones that produce more consistency and do win races. Another way to gain bite that we have described in the past involves the use of a spring-loaded pull-bar that allows a certain amount of rear end rotation. 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. Get the best deals on Asphalt Oval Racing Parts when you shop the largest online selection at eBay.com. Setup Tips: These tips are for an independent a-arm front suspension and 3-link rear suspension type of car, but may apply to other types of suspensions as well. Leaf springs are important when towing heavy objects.Bear with me here, this digs a little deeper into how leaf spring suspensions work. LOL. We took all the cross out like Lee and trailed the RR and did not use much stagger. Maybe if Billy would be more specific about how he made his stock setup work we could learn even more. (Uncheck the box beside Attach left side and use the arrows beside Left bar end clearance to zero the preload). So don't try it. More has to be done to help the rear roll to match the front. View Profile View Forum Posts Private Message Visit Homepage 02-25-2021, 09:09 AM. With several wins and a championship under our belt after the first year . ! But there is still some changes to be made from track to track. If the car feels loose throughout the corner, lower both track bars evenly. 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. 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. Wheel Covers. Everything you need to know to build, set-up and race a Street Stock competitively. Adjust the cross weight for more extreme conditions or different circumstances. Both of these ICs act like hard points of resistance to lateral movement of the chassis. Bite Off The Corners The CCMS rules allow 3rd link and panhard bar. 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.

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