Officials are trained to find sneaky parts. 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. So, there is a limit to how much you can get away with and still have a decent corner entry. . JP is that the car you wadded up and broke your leg? Johnny likes a softer feeling car, front and back. 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. Once the setup has been balanced and the shocks are decided upon, we need to evaluate the turn-entry characteristics and the fact that brake bias is a very important influence at this segment of the track. So, in most cases, we need to run a softer spring in the right rear. These pads are use on dirt for medium and heavy braking, and asphalt for sportsman and Hobby Stock cars. My truck has weight jacks and a stock 4 link. It would be nice if we could change the rear suspension, I have done a lot of research on it and have found some info, there is just not a lot legally that can be done with it. Biggest change is getting ride height . Prices listed are with a frame swap option. 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. I ran a street stock/sportsman from 1995 to 2000 with a metric frame. Rear Geometry var emailHost = "hotmail.com"
Your email address will not be published. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Your email address will not be published. Aero Package 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. Chassis Setup Docs Hyper Racing. Track Tools. 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. Play the all new "DANNY SIMKINS - 11 STRAIGHT - trivia game." Subtle changes often go unnoticed, especially when they're hard to see without jacking the car up and crawling underneath. 5. This force is resisted by the ball joints and control amrs. I measured ours at close to 20". The surest way to get disqualified is to bolt an illegal part onto your car. SR10 Dirt Oval RTR. 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. So, it might be the best for asphalt racing to run as low as possible or as much as the rules allow to create a lower center of gravity. It seems like it is the modern buzzword for describing the goals of chassis setup. 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. Filter by. The bottom line is that at mid-turn, each end will want to roll to its own degree of angle. Basically - after you finish the set up routine, the car goes in the hauler. Get the best deals on Asphalt Oval Racing Parts when you shop the largest online selection at eBay.com. Heck, if you are paying 20 bucks to get into the pits you might . 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. 10702FMC FRAME & CAGE - FAB CHEVELLE MOD. Conclusion Bump Springs Tech. Cra bomber, turbo ,etc. Not sure if there is a standard for metric cars but I havent found any specs on it. Location:Austin, Tx. Pavement Late Models Stock Cars. So don't try it. We have been softening those setups over the years, but never intended to go to coil bind or bump rubbers. There is one IC for the upper links and one for the lower links. . Cars that don't turn well are very likely to have poor MC designs. Street stock, pure stock, sportsman, factory stock. Strictly asphalt street stocks and parts. Always try to start with the track bars first. Drag the brake lightly as you enter the corner. Jul 25, 2011. Add Comment. However, tie down shocks are becoming less and less desirable. Raising the rear of the lower links also lowers the rear RC, although in reality this is very hard to do because the links are already mounted close to the rearend axle housing. Competitions are held on oval tracks . Looking forward to the tips for Dirt Oval racing! What I hear I feel is representative, although those who dive head first into the BBSS mix not because of a perceived and measured expectation of success but because of the "see monkey, do monkey" attitude, will never share what they are doing. 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
. A tight condition is the number one complaint from drivers. Why Lower The Rear RC? A three link with panhard bar using the stock lower mounts works fine. Administrator. Hardcore Package - $5,700 (2023 Pricing) *Some components included in the package are not shown in picture below*. It's the average height of the instant centers that determine the roll center height. 1 Min Read. Do not attempt to open the setup file in Windows. There's a happy medium between running just the right soft right rear and going too soft. Other competitors will offer you tips, but what works on their car may not work on yours and often they cant explain why something works for them, it just does. View all S3SS. Great advice! We had no idea how popular and successful this line of chassis would be. In this article, we explore the possibility of russet mites, thrips, spider mites, and other causes of leaf damage. 3. 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. Happy New Year. 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. If you can use bucket and run a taller sprign thats a good way to go. I was just trying to help a guy asking about what is done to the chassis. SmartPad BP-30 is a race only pad for heavy braking on dirt, and intermediate needs on asphalt. Posted October 3, 2005. 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. It is a low acid tomato with a unique flavor that has been described as sweet, yet slightly tangy. I think everyone agrees that the old leaf spring cars (Camaros and Novas) are becoming harder and harder to find. That is the best description of the result of the dynamic force that influences each system. Go here but read before you post..lol. Balance is spoken of in all types of motorsports these days, even F1. The track was a 5/8 mile asphalt and was extremely fast. ford 9' rear end w/disc brakes, stocks, springs, gauges just add motor and transmission and go racing. 2,224. 5. Has gone 1.29 60 ft on spray, has 28 10.5 et street tires on it also. Front End Geometry Even when clear rules exist, the track officials are often reluctant to enforce them. I have always believed in priorities because you can make gains faster when you solve the high priorities problems first. Re: street stock set up. Excessive front toe in will make a car turn into a corner quicker, & may create a loose condition. 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. 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. One way is to have a rear spring split, where the right rear (RR) spring has less spring rate than the LR spring. Whats the dominant front clip, and what are they doing with these metric rear setups? 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. Numerous car builders have come to realize the truth in the above statements. Taipei Taxis, City Traffic Taiwan Street scene in the capital city of Taiwan at dusk with motion blurred taxis and traffic in the streets. 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. Nick might be a better theory guy but I don't think that just adding a panhard bar will get you there. Adjust all four spring perch offsets to change the cross weight. would be able to run on asphalt with the leaf spring cars. Yea how many years ago a1? 10702FMI FRAME & CAGE - FAB IMPALA MOD. That was the only time that car was really fun to drive even though I opted not to go to tech because it was not legal for THR rules. For the Big Bar, Soft Spring setups, teams often introduce Pro-dive into the left front suspension to encourage rapid dive on entry to get the left front down quickly. 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. Now you have to compensate with spring change. JEFFREYS Fabrication is coming soon!!! The left side suspension usually is designed with about half the angle of the right side in a conventional design. Moderators:FeliciaMC88, UFo Race Championship. . Welcome to STLRacing.com, home of St. Louis Motor Racing News. in Exotic Race Cars on a Real RaceTrack, Copyright 2000-2023
Conversely, if the car feels tight throughout the corner, raise both track bars. ; this was with all four stock trailing arms. Create New Wish List . Love it when people explain why somethings done rather than just saying this is how its done., Thank you Jeff! Swap Option: Medieval will build the chassis using one of our sandblasted frames. 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. Would it be too much of an advantage to let these guys run a 3-link rear with solid links and panhard bar? 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. 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 were allowed weight jacks and after market uppers in front also. 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. 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 . Quote. How do I adjust the cross weight in an iRacing setup? How about just adding a panhard bar to the stock four-link setup? Lee Christjohn of Antigo, WI knows what it takes to win street stock races. "One bad person can ruin it for everyone and that is just disrespectful", The
Hey I am looking for some guidance setting up my 4 link GM metric rear end. Too low a ride height could cause the car to bottom out. state doesn't have. I guess the leaf cars could be allowed adjustable shackles in the rear to even that one out, sort-of. Not sure how much traffic this post will get here. 9. Get Ready for a New Season of Gardening -Choose from Tomatoes, Peaches, Corn, Zinnias & More! If you have any problem with the download, just email me, and I will email or Facebook you your file. Would a 11 in be better or a 13 in spring in back be better. The effect is huge. Most good cars are built on wheel scales. Your close on the springs if the car is 3200. 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?" Trends are a part of this learning curve and greatly influence some, but not all racers. They should also be able to run any panhard bar. Conversely, if the car feels tight throughout the corner, raise both track bars. 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. I can agree to use a LR instead RR. The set-up really planted the RR tire. 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. If your vehicle of choice utilizes a McPherson strut style front suspension, then your 2 pivot points would be . Those cars are coming around becoming competitive. Dec 24, 2005 at 5:33am. In the end there is a ton of stuff out there, everyone seems to have something that works. Long exposure, Nikon D810. If we have a top view difference in alignment between the transmission output shaft and the pinion shaft and they are parallel, then the angle to the driveshaft created by that misalignment might be sufficient to provide the needed angular differential needed for loading the U-joint bearings and reducing negative harmonics. Shocks affect the motion of the corners of the car and therefore the placement of loads during transitional periods. It was either cheat or park it until the rules change. 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. 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. jp. 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 car may or may not be neutral in handling, but the handling will not be consistent. For warmer track temperatures, you are going to need to tighten the car. As you will gather from this book, setting up your car right and properly maintaining it is a lot of work. 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. It may not display this or other websites correctly. Customer is to bring a clean non-sandblasted frame when picking up the chassis. Contact Us. LOL. You are using an out of date browser. Race Car Street Stock Set Up help manual book. 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. I see the times at CCMS are identical, THR the truck .5 sec quicker. Brake bias influence can be easily determined by entering the corner with medium to heavy braking first and then entering with light braking to see if there is a difference. RAceman. Less fuel equals faster speeds. We even did pretty good with it in the THR LLM class back in `99. 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. BBC Truck Header 2 1/4in X 4in Fender Well Schoenfeld 2348 . This 7 shock kit includes shocks for every track condition with tips to help fine tune your racecar. 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. My name is Rodney Arndt, I have an associates degree in automotive technology. Thank You, DreamRacing.com offers a chance to go racing
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. Alignment This setup guide also has new information based on the changes that go along with the new version of the sim. the radiator. This is because of the construction using angled, from a top view, arms that converge to points called instant centers. Flat Tracks: On an asphalt car, utilizing slightly stiffer rebound on the left side, while softening the rebound on the right side, will generally enhance the handling of the car. Street Stock Tech. We always start with the front end geometry on any race car. Some people add preload to the sway bar to make cross weight adjustments. LIT-A950700006 80249N Ford F-150 LightningHarley HE. 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. Dwarf Mr Snow, Fred's Tie Dye, Saucy Mary, Sweet Scarlet, Kangaroo Paw Green, Idaho Gem and Banana Toes are just a few of the varieties one gardener is growing in a 4x8 bed of "bulletproof" tomatoes. As for stock arms they worked just fine ,and didn't cost anything. With so many different combinations of possibilities it leaves us with literally thousands of possible chassis combinations to choose from. It has been found that the misalignment of your tires/wheels presents serious drawbacks to a finely tuned chassis and setup. I would like know what the ic would be on a g body with a 9 inch in the rear with stock suspension. If the LR tire is too cool, then the RR spring is too stiff. First of all, the design is intended to solve several problems. Reply #9 - 05/01/09 at 8:00pm. How to Open the Setups. I would suggest going to www,4m.net to the tech board. The driveshaft alignment is critical from the standpoint of mechanical efficiency. Last couple of years I ran the car we just used tubular ones with rod ends because it was legal and easier. .220 to .235 would be fine without a quickner. That's why I asked about weight jacks in the original post. how to adjust iRacing Sprint Car cross weight, go here. Forum Actions: Forum Statistics: Threads: 1; there are a lot of knowledgeable guys there. 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. Each end has its own moment arm length and resistance to roll as well as other factors. Posted August 22, 2005. the force of air. Greetings guys, Im new to the site. Loss of efficiency can rob power from the drivetrain due to the generation of vibrations and harmonics that are also damaging to the bearings. More has to be done to help the rear roll to match the front. The right-side tire contact patches will also need to be inline with the right front tire pointed straight ahead. I once drove a metric on both dirt and asphalt. 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. Got protested and is now in limbo! If the car feels tight on corner exit, raise the right track bar. The proper steps to do this are outlined below. I can understand not allowing alot of stuff from a cost perspective but weight jacks seem to be one of those things that are cheap to begin with and you end up spending 3 times as much money and alot more time trying to get the same result while complying with rules that don't allow them. The number one reason a car will be tight and not want to turn is because the front end is not designed properly. If the car feels loose on corner exit, lower the right track bar.
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