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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. To download a copy of the E-book, simplyclick on the link below. 2. Always try to start with the track bars first. Pay attention to the left front tire temperatures versus the left rear. would be able to run on asphalt with the leaf spring cars. Try one or two click on each spring perch shown above to raise the cross weight. 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. A tight condition is the number one complaint from drivers. Then all you have to do is maintain that balance throughout the season and that means resisting making changes that take you outside that envelope. Has gone 1.29 60 ft on spray, has 28 10.5 et street tires on it also. 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. 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. We were allowed weight jacks and after market uppers in front also. Customer is to bring a clean non-sandblasted frame when picking up the chassis. You must log in or register to reply here. 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. 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. FOR 78-88 GM METRIC CARS. Street Stock Setups. After you get the cross weight where you want it, adjust the ride heights. Car went anywhere he wanted and was quick time, won the trophy dash, heat race and main. We are at a crossroads at this point in time with setup technology in asphalt racing. Each setup has a life cycle or a time frame in which it will work before we run into a stopping point with it. We even did pretty good with it in the THR LLM class back in `99. 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. 6. Special Discount Cost- $24.95 !To download a copy of the E-book, simplyclick on the link below. If one corner of the car is shocked stiff, then as that corner desires to move in compression, more load will be retained by that corner as well as the opposite diagonal corner of the car during the compression cycle only. A set up plan will help you to build a race winning effort. 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. One guy said it come up off the ground two feet. Each end has its own moment arm length and resistance to roll as well as other factors. That extra effort is what separates the front runners from the rest of the field. The car madracing 19 has for sale has all of these things done to it. 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. I was wondering if anyone out there had any experience circle track racing a mopar unibody. 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. As each season comes along, our knowledge of what we need and desire grows. Page 1 of 1. The Metric four-link suspension design is a bit different than most other rear suspensions. 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. (Uncheck the box beside Attach left side and use the arrows beside Left bar end clearance to zero the preload). If your vehicle of choice utilizes a McPherson strut style front suspension, then your 2 pivot points would be . Lee Christjohn of Antigo, WI knows what it takes to win street stock races. Each suspension system desires to do its own thing when lateral forces are introduced from the car going through the turns. Ive made the brackets on the rear housing (lowers) longer with trailing arm mounts that have 3 . As for stock arms they worked just fine ,and didn't cost anything. How to Lower the Cross Weight in an iRacing Setup. Here is a synopsis of how camber effects the handling of the chassis: Here are the diameter choices of the bar: The grill tape option is located under the drivetrain/aero tab within the garage menu. 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. I ran a street stock/sportsman from 1995 to 2000 with a metric frame. JP is that the car you wadded up and broke your leg? Most Metric cars I've evaluated have rear RC's up around 14.5 inches off the ground. First, we don't want to restrict the movement of the arms too much. 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. At some point, we take in enough information to allow us to avoid the mistakes of the past and get ahead of the curve in setting up our asphalt cars. 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. If those desired angles are different, then we term the setup unbalanced. 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. Sometimes the handling of the car might not be to your liking. . I never got to the experimenting stage on asphalt. Letting the metric cars run Camaro spindles would be a step in the right direction. If you use no brakes you can wear the right front. A spring split of 250-lb/in spring in the left rear and 200-lb/in spring in the right rear is common. The bottom line is that at mid-turn, each end will want to roll to its own degree of angle. Download the Jet Mod Scale & Setup Sheet Here! But if you cant 11 inchers is all you can go. The metric cars can use different size spring spacers as well, so the playing field is already level in that respect. I don't get too many reports of continual, repeated wins and successes. Posted 5 weeks ago. The car is loose mid to exit with not foward drive. 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. Its important to make even adjustments, meaning you should make the same number of clicks on each spring perch. The rear roll center is certainly part of the problem. 1 being the most important. Ill provide a couple of tips that will help you get your car tighter or looser, whichever you need. We can lower the rear RC by making changes to the mounting points. It must show a consistent gain in performance and a logical ideology to the bulk of race teams. Taipei Taxis, City Traffic Taiwan Street scene in the capital city of Taiwan at dusk with motion blurred taxis and traffic in the streets. Dec 24, 2005 at 5:33am. 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. I remember qualifying times in the 19.6 to 19.7 range. This chassis utilizes our very popular double slotted strut style front clip. The rear won't desire much roll and there will be excess load transfer to the outer wheel and tire. These pads are use on dirt for medium and heavy braking, and asphalt for sportsman and Hobby Stock cars. Strictly asphalt street stocks and parts. Go here but read before you post..lol. Yes, outright violations are penalized, but creative interpretations or improvements in area that have no specific rule usually get the Don't bring that backnext week penalty. Too low a ride height could cause the car to bottom out. I'm a former NASCAR short track driver and league administrator for SASCAR. 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. The metrics at THR are NOT competitive compared to the leaf cars. 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 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. In the last article, I talked about the uses of toe and how it affects both drivability and front-end dynamics. 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. For the novice sim racer, all these setup options can seem overwhelming & confusing without the knowledge of what all these adjustments are or do.By understanding the basics of what each component is & how it directly effects the car, you'll quickly discover what direction you should head when trying to adjust for that looseness exiting the corner under acceleration. The less fuel in the tank the tighter the chassis will become. The driveshaft doesn't know which view these angles are resulting from, just that they are equal and opposite. Add to Cart. We ran the car with a lot softer set up than that. I can agree to use a LR instead RR. . rolling chassis. Good luck. 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. Thats the theory and the science anyway. Add to . Manyof the ideas fit into the gray areas and some of them are outright cheating. 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. As you will gather from this book, setting up your car right and properly maintaining it is a lot of work. I'll start out with what seems like the obvious to me - the rear suspension. 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. 1 Min Read. Unfortunately, most rule books that I have dealt with are very vague. 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. 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. Often overlooked in the mainstream, dirt track racing is one of the most exciting forms of tire-scorching car racing action. Get the best deals on Asphalt Oval Racing Parts when you shop the largest online selection at eBay.com. 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. ! The front moment center (MC) location plays a huge role in how the front end wants to work. RacelineCentral.com All Rights Reserved, NASCAR 2K3 Racing Season Garage 101 Guide Download, Creative Commons Attribution-Noncommercial-No Derivative Works 2.5. Good luck and keep the rubber side down!!! Dial In Your Metric. MSRP: $515.99. Once you've made the entry to the corner balanced, check to see if the adjuster is centered. Maybe not on little tires either. #1. It also seems hard to argue that the stock 4-link/metric cars have a hard time being competive in our SS/Sportsman classes where a stock suspension is mandated. I wondered if a 3 link could be made to work well without them. Truck99August 22, 2005 in Grease Monkey Hangout. Taipei, Taiwan. Caster. Welcome, Guest. Designed and built with one thing in mind, WIN RACES. Any angle up hill to the right rear will cause upward force on both tires and unload both tires. 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. Play the all new "DANNY SIMKINS - 11 STRAIGHT - trivia game." I talk to lots of racers representing every form of circle track racing in every region of the country and beyond. If the same stiffly shocked corner is in rebound, less of the overall load will be retained by that corner, and its diagonal corner as well, during the rebound cycle only. 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. You can try bigger adjustments if you cant tell much difference in the handling after you make smaller adjustments. 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. 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. All customers interested in purchasing, repairing, or setting up a Howe-Eddy modified should contact Travis Eddy at Eddy Performance (989) 948-8005. This setup guide also has new information based on the changes that go along with the new version of the sim. Stretch Film Division. Might go25- 50 pds more on each side and the left side should be more than the right side. Refer to the images below. Sliding the MC left and to the inside of the turn makes the suspension softer. If you want to know how to adjust iRacing Sprint Car cross weight, go here. Circle Track Wheels. 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. I'm not saying this is not important to some degree, but on short tracks I would stress that aero downforce is over-rated in most cases. Ill start of saying i know how to mesure the roll center but im not sure where im trying to go or how to exactly. Add Comment. This is because of the construction using angled, from a top view, arms that converge to points called instant centers. Has boxed lowers, adjustable uppers , stock springs and shock. Check your PM's. 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. You must try to determine if your setup is balanced and then if not, make the necessary changes to bring it into a balanced state. racing on asphalt. And your choice of aluminum or steel fenders doors and quarters. Car has stock location rear links and stock links , different bushings . Street Stock Dirt Oval Racing - All the dirt, clay and pavement-racing excitement in a 1:10 scale RTR. Not sure if there is a standard for metric cars but I havent found any specs on it. Hobby Stock - (USRA/IMCA TYPE) Street Stock - (WISSOTA TYPE) Stock Car - (USRA/IMCA TYPE) Divide that in half for the center of the wheel. 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. We always start with the front end geometry on any race car. 4. You refering to dirt track racing correct? Fast And Furious. ; C1 - Designed for medium to low brake temperatures and provides good cold bite while being rotor friendly. We also discuss where we want the roll cente. This tape
I think that since SAS is more of a momentum track and the metric cars may not have such a disadvantage. Your close on the springs if the car is 3200. 2,224. SAS I seem to remember being faster than the sportsmans. 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. Sep 1, 2009. Would it be too much of an advantage to let these guys run a 3-link rear with solid links and panhard bar? What do you think Nick? So, in most cases, we need to run a softer spring in the right rear. In order to slow you must lose (kinetic) energy. 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. To sort of act as a pull bar? I want to try a reverse spring set up on a hobby stock car that am helping a friends with its a 3400 lbs metric car all stock. 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. Here is an explanation of balance related to the dynamics of the race car. 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. Estler's Mortgage Lifter is ideal for growing in northern climates due to its ability to withstand cooler temperatures better than other varieties. But just wondering what the heck guys are doing to these metric street stocks to make em so fast. For many gardeners, it starts with tomatoes. 266. Includes: Performance handling basics, chassis & roll cage fabrication, front suspension alignment, changing the roll center and camber curve, rear suspensions, springs and shocks, tires (bias and radial), stagger, gearing, basic chassis set-up for asphalt and dirt tracks, weight adjustments, tuning the car to . A complete body comes with the fiberglass hood and roof, plastic MD3 nose and tail, a set of skirts, trunk, a box of rivets. How do I tighten or loosen the car on entry? I have always believed in priorities because you can make gains faster when you solve the high priorities problems first. How about just adding a panhard bar to the stock four-link setup? We had LF 1000, RF1300. It is a low acid tomato with a unique flavor that has been described as sweet, yet slightly tangy. The very last thing you need to worry about is your aero package. Thank you for pointing out the obvious to me . A 1/2 inch height change from level can make significant handling changes. The RC height will move with vertical movement of the rear of the car. Do not attempt to open the setup file in Windows. 507-386-3930. 10702FMI FRAME & CAGE - FAB IMPALA MOD. 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 . This topic is now archived and is closed to further replies. I drive both a metric (my truck) and a leaf spring car (ss). It is this sliding scale situation that determines the stiffness of your front end. This will help keep your ride heights in the ballpark. I was just trying to help a guy asking about what is done to the chassis. 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 . 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. so I ran a .185 valving. 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?" Street Stock. I guess the leaf cars could be allowed adjustable shackles in the rear to even that one out, sort-of. Cra bomber, turbo ,etc. Additionally, modern pennies are only 2.5% copper, so older pennies should be used instead for better results. Cars that don't turn well are very likely to have poor MC designs. Quick view. Pure Stock Tech. Built to the same high standards of safety, quality and craftsmanship that has made Port City Racecars an industry leader. Get Ready for a New Season of Gardening -Choose from Tomatoes, Peaches, Corn, Zinnias & More! 5. pretty much none of that ++*% matters at stateline, it is mostly driver and survival is the name of the game, get all your angles and roll centers figured out and you will be faster when you make it to the front i have seen dozens of cars that dominate in the stock class at stateline but get squashed at eriez and rw7 however once you get a car fast at either of those tracks then you will be fast everywhere you go. JP, are you saying that you were allowed to run it in that form - stock lowers with an aftermarket upper link? In the same manner, we can lower the rear mount of the upper link and lower the upper IC. Posted August 22, 2005. What do I do if the car is loose or tight throughout the corner? This will be a brief tutorial that should help iRacers adjust their setups to better suit their driving styles.