They arent usually as good at spotting little modifications to every single part of the suspension. A set up plan will help you to build a race winning effort. 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. Before you start your season, you need to create your How do I tighten or loosen the car on exit? The fruits of this plant are large and can weigh over one pound. I see the times at CCMS are identical, THR the truck .5 sec quicker. Get it right or don't get it at all. MSRP: $515.99. 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. It must show a consistent gain in performance and a logical ideology to the bulk of race teams. 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. 10702FMI FRAME & CAGE - FAB IMPALA MOD. Rear Geometry All this really depends mostly on the track and maybe the car youre driving. We showed you the 3-link rear end last week. Aero Package I don't get too many reports of continual, repeated wins and successes. The left side suspension usually is designed with about half the angle of the right side in a conventional design. Setup Tools. competition. For many gardeners, it starts with tomatoes. 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. We can lower the rear RC by making changes to the mounting points. Current Stock: Quantity: Decrease Quantity: Increase Quantity: Save to Wishlist. Posted 5 weeks ago. Pavement Late Models Stock Cars. CRA street stock. It might help to leave it unattached on ovals. Taipei, Taiwan. What do I do if the car is loose or tight throughout the corner? 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. Stock Car Racing, NASCAR, Late Model, Sooner Speedway, Frost Racing Team, Race Links, Chevy Monte Carlo . And, it must be economically applied. 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. 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. It locates the rearend fore and aft, it reduces rear steer when the chassis rolls, it prevents axle wrap-up when braking or accelerating, and it provides a relatively stable roll center location. There are two main ways to tighten or loosen the car. We had no idea how popular and successful this line of chassis would be. 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. Here are what we consider to be the 10 most important areas of chassis setup with No. Street Stock Setups. Aug 24th 2005. the force of air. Check your PM's. When you enter the corner you are going to slow down. 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. Use the "new" 7 inch arm on the RH and the 8.5 on the LH. For the lower links, lowering the chassis mounts at the front of the link lowers the rear RC. The cars with the stock metric 4 link all seem to go into a four wheel drift and are always loose on exit. Each setup has a life cycle or a time frame in which it will work before we run into a stopping point with it. Heres a helpful image. 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. 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 is very "old school" but when applied with a balanced setup, very effective. Love it when people explain why somethings done rather than just saying this is how its done., Thank you Jeff! Just about all the available setup options that you can adjust on a real WC car can be adjusted in the sim. How to Raise Cross Weight in iRacing Setup. 358101 FAB . Too low a ride height could cause the car to bottom out. Caster. The CCMS rules allow 3rd link and panhard bar. Most often, these pivot points are the upper and lower ball joints in your double A-arm style suspension system. Disconnect the sway bar and zero (unload) it. 35810 FABRICATED CHEVELLE FRAME. Christjohn has been racing street stocks for 13 years and has amassed 74 feature wins and 4 track championships. men need when considering these types of changes. That extra effort is what separates the front runners from the rest of the field. Only at teamsimkins.com. Antidive and antisquat are mechanical influences that can help our transitional phases of entry and exit. Roll Center or Moment Center. There's a happy medium between running just the right soft right rear and going too soft. Off-centered adjusters can be very inconsistent. Looking forward to the tips for Dirt Oval racing! The car madracing 19 has for sale has all of these things done to it. Subtle changes often go unnoticed, especially when they're hard to see without jacking the car up and crawling underneath. 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. Location. Also has a anti roll bar added to it. jp. I also was involved with beta testing for NASCAR Racing Simulation Games. I measured ours at close to 20". That's one thing I've really never understood about some street stock classes that don't allow weight jacks. I would get the metric arms from Speedway P-N 910-31134-RH (LH) they are 8.0 and 8.5 long. The right-side tire contact patches will also need to be inline with the right front tire pointed straight ahead. It is not advantageous to have the rearend steer to the right at any time on asphalt. Biggest change is getting ride height . by rick7343 Fri May 01, 2015 5:14 pm, Post I drive both a metric (my truck) and a leaf spring car (ss). 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. Track Tools. I'll start out with what seems like the obvious to me - the rear suspension. I haven't plotted it all out but four links, none of which are at the axis of rotation, would tend to fight each other as body rolls. But just wondering what the heck guys are doing to these metric street stocks to make em so fast. 2. Johnny likes a softer feeling car, front and back. Those cars are coming around becoming competitive. Divide that in half for the center of the wheel. Would it be too much of an advantage to let these guys run a 3-link rear with solid links and panhard bar? 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. 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 ). More has to be done to help the rear roll to match the front. If those desired angles are different, then we term the setup unbalanced. The components that locate the rear end must be evaluated and set correctly. This means keep track of weight coming off and going on. Jul 25, 2011. It is a low acid tomato with a unique flavor that has been described as sweet, yet slightly tangy. Alignment By Bob Bolles, Circle Track Magazine . Pure Stock Tech. Nick and I agree on something! If the car feels loose on corner entry, lower the left track bar. I would suggest going to www,4m.net to the tech board. It has been found that the misalignment of your tires/wheels presents serious drawbacks to a finely tuned chassis and setup. Has boxed lowers, adjustable uppers , stock springs and shock. With several wins and a championship under our belt after the first year . I don't really encourage that method. Wheels. 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 . also get to the scales whenever you can. Unbalanced setups exhibit easily observed characteristics, such as unusually high degree of wear and temperature on one tire versus the other tires. You are using an out of date browser. The steering system in your car must be evaluated and any negative characteristics must be eliminated. This is what I did to my Metric that won the 2012 UMP National Championship. Prices listed are with a frame swap option. What Are Russet Mites? Your close on the springs if the car is 3200. Officials are trained to find sneaky parts. The images used are taken from the iRacing Super Late Model setup screen. would be able to run on asphalt with the leaf spring cars. AFCO C1 METRIC PADS. A level panhard bar ( same mounting height on both sides) means force is vectored laterally to the tires. We run on street tires and can not move suspension mounts (viasably ) I won the championship last year with a car . . Afco Racing Products. Thanks a lot for making it. We have continually pressed these issues because of the extreme importance they have. state doesn't have. My truck has weight jacks and a stock 4 link. A spring split of 250-lb/in spring in the left rear and 200-lb/in spring in the right rear is common. The idea is to steer the car using different height holes for the rear control arm mounts. It was either cheat or park it until the rules change. 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. Some people add preload to the sway bar to make cross weight adjustments. Did you see anything interesting? The artistry comes in when you actually do it. 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. The moment arm is 5.5 inches for the Late Model and is much easier to set up. I understand not wanting to share to much especially if your a racer, but who or where else can I gain info on this? Bilstein has put together the ultimate Street Stock / Factory Stock Shock Package. 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. 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. It costs just as much money, if not more, to run poorly, so you might as well learn to run well. 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. I better get the torch and welder dusted off! And your choice of aluminum or steel fenders doors and quarters. Drag the brake lightly as you enter the corner. 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. I would rather race 100% legal with a rule book that is written 100% clear and specific, that is enforced as it is written. Greetings guys, Im new to the site. Hey I am looking for some guidance setting up my 4 link GM metric rear end. by RonL Fri Jul 17, 2015 12:02 am, Powered by phpBB Forum Software phpBB Limited, Shocks, Springs, Brakes, Frame, Body Work, etc. Often overlooked in the mainstream, dirt track racing is one of the most exciting forms of tire-scorching car racing action. Filter by. 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. 4. Welcome, Guest. BBC Truck Header 2 1/4in X 4in Fender Well Schoenfeld 2348 . 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. Another gardener is pla, Get Free Seeds & Taste the Delicious Flavor of Estler's Mortgage Lifter with Edweather's Generous Offer, Estler's Mortgage Lifter is an heirloom tomato variety developed by William Estler in the mid-1920s. RAceman. 1 Min Read. Maybe if Billy would be more specific about how he made his stock setup work we could learn even more. Street Stock Dirt Oval Racing - All the dirt, clay and pavement-racing excitement in a 1:10 scale RTR. 9. Last couple of years I ran the car we just used tubular ones with rod ends because it was legal and easier. I have little experience on dirt but can definetely notice this! Adding neoprene bushings to all of the connection points will unnecessarily restrict movement and cause the chassis to be stiff in roll. How do I tighten or loosen the car on entry? So, we either lower the rear RC or soften the springs, especially the right rear spring, or preferably do both. The rear roll center is certainly part of the problem. how to adjust iRacing Sprint Car cross weight, go here. 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. Both of these ICs act like hard points of resistance to lateral movement of the chassis. Post 10702FMC FRAME & CAGE - FAB CHEVELLE MOD. These cars drive off the left rear more to keep them from being to loose, that is why you are starting to see the LF coming off the racetrack, it takes proper weight placement, rear bushing selection, spring choice, and ride heights to make it have a lot of traction but not be a three wheel out of control mess. Home. I'm thinking about building a B Body for dirt track racing. The less angle the better. 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. If your vehicle of choice utilizes a McPherson strut style front suspension, then your 2 pivot points would be . Always try to start with the track bars first. Good luck. 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. 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. We got away from running thatmuch cross as the car was pushy. Wheel Covers. 6. 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. Basically - after you finish the set up routine, the car goes in the hauler. Oct 12, 2013 #2. The car would have a complete roll cage with stock type suspension. Modified Cars for Sale IMCA Asphalt modified Setup Asphalt Modified Race Cars Asphalt Street Stock Setup Asphalt modified for Sale Asphalt modified Set Up The ULTIMATE Racing Car Chassis Setup Guide and Designed and built with one thing in mind, WIN RACES. 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. . 122. Conversely, if the car feels tight throughout the corner, raise both track bars. 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. Maybe not on little tires either. 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. Conclusion The Metric four-link rear suspension is here to stay for a while. A Setup To-Do List to Get You Started . Forum Actions: Forum Statistics: Threads: 1; 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. Racing Aspirations refers to this point as the roll center (RC), but it can also referred to as the moment center. 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. 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. Click. 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. Christjohn likes to get to the track early and get his car set up so he can watch the races. Cvracer5. I ran a street stock/sportsman from 1995 to 2000 with a metric frame. Posted October 3, 2005. . 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. This topic is now archived and is closed to further replies. 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/. Here are some recommendations. As each season comes along, our knowledge of what we need and desire grows. 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. You can try bigger adjustments if you cant tell much difference in the handling after you make smaller adjustments. $1,700. I'd think that without them you'd at the very least need to allow some sort of spring adjuster. Car has stock location rear links and stock links , different bushings . This is our 1988 Monte Carlo Stock Appearing Body. Now you have to compensate with spring change. Race Car Street Stock Set Up help manual book. That is the best description of the result of the dynamic force that influences each system. Shocks affect the motion of the corners of the car and therefore the placement of loads during transitional periods. Dirt Modified IMCA, Local Tracks. Smaller gains can come later on after the more important aspects of setup are resolved. 266. The Metric four-link suspension design is a bit different than most other rear suspensions. I ran a metric street stock at HMP for a number of years and was definitely not at a disadvantage. The set-up really planted the RR tire. See all 6 photos. It just won't work. The influence of the location of the front MC can be compared to a sliding scale. I was just trying to help a guy asking about what is done to the chassis. 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. Each end has its own moment arm length and resistance to roll as well as other factors. The number one reason a car will be tight and not want to turn is because the front end is not designed properly. 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. Its hard to say without more information. I think everyone agrees that the old leaf spring cars (Camaros and Novas) are becoming harder and harder to find. ; C1 - Designed for medium to low brake temperatures and provides good cold bite while being rotor friendly. Most of the time when some ask the question they are at that point and just don't know it. I think Terry has already tried, but we'll try again. Motorcycle. It is not advantageous to have the rearend steer to the right at any time on asphalt. LOL. The only component were worried about is Got protested and is now in limbo! Bump Springs Tech. Each suspension system desires to do its own thing when lateral forces are introduced from the car going through the turns. 6 pt roll cage setup for easy in and out street use. 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. Sometimes weather differences will require changes to either tighten or loosen the setup.
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