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 . The control arm angles affect the rear steer and the third-link angle can redistribute load upon acceleration. ford 9' rear end w/disc brakes, stocks, springs, gauges just add motor and transmission and go racing. JavaScript is disabled. 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. 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. 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. These are the general rules unless you are trying to "tie down" a corner. So don't try it. I don't get too many reports of continual, repeated wins and successes. Pavement Modifieds. 358101 FAB . One way is to have a rear spring split, where the right rear (RR) spring has less spring rate than the LR spring. This will help keep your ride heights in the ballpark. Click. 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. Always try to start with the track bars first. In 2010 we made a good car better by a design change with the introduction of the Chevelle front clip. Aug 24th 2005. Adjustment Guide - Medieval Chassis. LIT-721 80293NDP 2009-2015 Cadillac CTS-V HE. My name is Rodney Arndt, I have an associates degree in automotive technology. 5. Ill provide a couple of tips that will help you get your car tighter or looser, whichever you need. ! 1 Min Read. That move took this design to the next level. The very last thing you need to worry about is your aero package. in Exotic Race Cars on a Real RaceTrack, Copyright 2000-2023 This topic is now archived and is closed to further replies. Would it be too much of an advantage to let these guys run a 3-link rear with solid links and panhard bar? Yeah! I don't really encourage that method. Ill also answer a couple of common questions: These changes are applicable to all asphalt oval cars. Now you have to compensate with spring change. 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. Probably to the guys that are beating you! In 2005 Victory Circle entered the world of dirt racing. Get Ready for a New Season of Gardening -Choose from Tomatoes, Peaches, Corn, Zinnias & More! Most Metric cars I've evaluated have rear RC's up around 14.5 inches off the ground. We ran the car with a lot softer set up than that. Street Stock Dirt Oval Racing - All the dirt, clay and pavement-racing excitement in a 1:10 scale RTR. This force is resisted by the ball joints and control amrs. The pad is best used on IMCA style modifieds, the fronts of "Outlaw" style modifieds, drag racing . 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. Even when clear rules exist, the track officials are often reluctant to enforce them. Trends are a part of this learning curve and greatly influence some, but not all racers. Thanks a lot for making it. I have always believed in priorities because you can make gains faster when you solve the high priorities problems first. 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. Full of fuel, everything done, full of oil, lead bolted down. The only component were worried about is I noticed the camaros can arch or de arch springs. 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/. . Lee Christjohn of Antigo, WI knows what it takes to win street stock races. 10702FMC FRAME & CAGE - FAB CHEVELLE MOD. Bush i agree with your Eriez/ 7 comment. Told me he might be going to Lebanon to run now. 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. How do I tighten or loosen the car on exit? Shocks affect the motion of the corners of the car and therefore the placement of loads during transitional periods. 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. also get to the scales whenever you can. Lift earlier, and/or drag the brake just a little bit on entry. Unbalanced setups exhibit easily observed characteristics, such as unusually high degree of wear and temperature on one tire versus the other tires. How do I adjust the cross weight in an iRacing setup? It may not display this or other websites correctly. If the car feels tight on corner exit, raise the right track bar. It has been found that the misalignment of your tires/wheels presents serious drawbacks to a finely tuned chassis and setup. Adjust all four spring perch offsets to change the cross weight. These cars just take a little longer to get them set-up compared to the camaros, but there are alot more adjustment points to help you get and stay fast. document.write("" + "") Going way back I remember running a early 70's Nova in the street stock division at the old Nazareth 1/2 mile dirt track in the early 80's. Damn, they were some wild nights up there. Poorboy, I think you're exactly right. I see the times at CCMS are identical, THR the truck .5 sec quicker. My truck has weight jacks and a stock 4 link. View all S3SS. 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. Understanding the relationship between the rear roll center on these cars and the setup will help us find a more balanced setup. I followed the progress of the THR #01 SS very closely and when Terry says he tried everything legally possible to get that rear end to quit binding up during body roll, he's not exagerating. 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. LIT-A950700016 80275NDP Ford Mustang Cobra HE. Not that you can't get the same handling results with shims, etc., but it's a whole lot easier to adjust the handling of the car with weigh jackers. 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. 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. Antidive helps prevent sudden nose dive on entry by mechanically resisting the downward motion of the suspension using the rotational forces created through braking. This tape That is the essence of shock technology related to handling influences. The metric cars at THR may be as competitive as the camaros but at CC they were not even close untill we were allowed to change to 3 link and a panhard bar. We also might want to change the locations of the chassis and/or rearend mounts for the links. Free Download Chapter listings from Street Stock Setup Maual 2.1.pdf (PDF). March 27, 2015. Its a whole lot more driver and a whole lot less setup on dirt. Its not necessary unless your own a road course. But if you cant 11 inchers is all you can go. 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. Grill tape is nothing more than duct tape. On a metric four-link car, the four control arms determine the rear moment center height too. Administrator. Heres a helpful image. Would a 11 in be better or a 13 in spring in back be better. If you want to know how to adjust iRacing Sprint Car cross weight, go here. So, here is, in order of logic and importance, a list of setup parameters we need to address to make our cars fast and consistent. Street stock, pure stock, sportsman, factory stock. Still having problems? So, in most cases, we need to run a softer spring in the right rear. 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. Refer to the images below. 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. See All - Best Selling. Pay attention to the left front tire temperatures versus the left rear. Welcome to STLRacing.com, home of St. Louis Motor Racing News. After you get the cross weight where you want it, adjust the ride heights. Keep It Fast and Cheap. 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. The upper IC is to the rear of the rearend and the IC for the lower links is well in front of the rearend. That's why I asked about weight jacks in the original post. Try to at least get to 53% front and 53% left weight with out adding ballast behind the rear wheels. 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. Most guys that are fast there are fast everywhere. ; C1 - Designed for medium to low brake temperatures and provides good cold bite while being rotor friendly. Most good cars are built on wheel scales. SUCH AS SPRINGS, SHOCKS, SWAYBARS ETC. They should be matched up within a couple of degrees of average temperature across the tread. Afco Racing Products. Play the all new "DANNY SIMKINS - 11 STRAIGHT - trivia game." Wheels. Alignment 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. That troubles me. 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. Wheel Covers. I think Terry has already tried, but we'll try again. You can then make fine adjustments with the sway bar preload if desired. var email = "RacelineCentral" Camber was -2 deg on RH and +2 deg on LH at ride height. Competitions are held on oval tracks . Any angle up hill to the right rear will cause upward force on both tires and unload both tires. The right-side tire contact patches will also need to be inline with the right front tire pointed straight ahead. Stock Car Racing, NASCAR, Late Model, Sooner Speedway, Frost Racing Team, Race Links, Chevy Monte Carlo . The driveshaft alignment is critical from the standpoint of mechanical efficiency. The number one reason a car will be tight and not want to turn is because the front end is not designed properly. 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. I think I'll make a proposal along these lines. var emailHost = "hotmail.com" A Setup To-Do List to Get You Started . I have had a lot of feedback from teams who did the same with the same results. Too low a ride height could cause the car to bottom out. It costs just as much money, if not more, to run poorly, so you might as well learn to run well. The more third link angle you have, the more antisquat there is. AFCO C1 METRIC PADS. As the front brakes are applied, the caliper grabs the rotor and the motion of the wheel/rotor tries to rotate the spindle. Thats with a 305 a ton less HP. Greetings guys, Im new to the site. Once you've made the entry to the corner balanced, check to see if the adjuster is centered. Happy New Year. lowers are stock location on frame. 1. Street Stocks Dur-A-Flex Racing. With all the negative BS that tends to permiate these boards these days, I thought maybe we could talk about something real and constructive. 7. 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. 70030. If we can raise the upper front link mounts, we can lower the rear RC by lowering the upper IC. Car has stock location rear links and stock links , different bushings . Customer is to bring a clean non-sandblasted frame when picking up the chassis. 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.
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