. I ran a metric street stock at HMP for a number of years and was definitely not at a disadvantage. 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. 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. They arent usually as good at spotting little modifications to every single part of the suspension. If the LR tire is too cool, then the RR spring is too stiff. This chassis utilizes our very popular double slotted strut style front clip. You need to keep the ride heights as close as possible to where they were before you started. The less fuel in the tank the tighter the chassis will become. Wheel Accessories. The Antis Get Ready for a New Season of Gardening -Choose from Tomatoes, Peaches, Corn, Zinnias & More! Here are what we consider to be the 10 most important areas of chassis setup with No. 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. 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. The Metric four-link suspension design is a bit different than most other rear suspensions. I never felt good about cheating but when everyone does you need an even playing field. A complete body comes with the fiberglass hood and roof, plastic MD3 nose and tail, a set of skirts, trunk, a box of rivets. SmartPad BP-30 is a race only pad for heavy braking on dirt, and intermediate needs on asphalt. Most of the ideas in this book are perfectly legal for any rule book. RacelineCentral.com All Rights Reserved, NASCAR 2K3 Racing Season Garage 101 Guide Download, Creative Commons Attribution-Noncommercial-No Derivative Works 2.5. Subtle changes often go unnoticed, especially when they're hard to see without jacking the car up and crawling underneath. I would suggest going to www,4m.net to the tech board. 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. I appreciate the lead. The surest way to get disqualified is to bolt an illegal part onto your car. We can lower the rear RC by making changes to the mounting points. As these pads get hot, they offer more friction, and still work well at over 1000 degrees. 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. Pavement Late Models Stock Cars. 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. Its a whole lot more driver and a whole lot less setup on dirt. It's on a car that I'm helping with. Russet mites are a type of pest that can cause damage to leaves, stems, and petioles. 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. 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. Welcome to STLRacing.com, home of St. Louis Motor Racing News. 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. You refering to dirt track racing correct? Pay attention to the left front tire temperatures versus the left rear. And, of course, Terry chose to park it. By Bob Bolles, Circle Track Magazine . Re: street stock set up. ; C1 - Designed for medium to low brake temperatures and provides good cold bite while being rotor friendly. The upper IC is to the rear of the rearend and the IC for the lower links is well in front of the rearend. 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. Setup Tools. METRIC CROW FOOT Other Items Online Auctions at EquipmentFacts.com. Go here but read before you post..lol. 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. Letting the metric cars run Camaro spindles would be a step in the right direction. Be careful not to overdue that. We also discuss where we want the roll cente. I never got to the experimenting stage on asphalt. With all the negative BS that tends to permiate these boards these days, I thought maybe we could talk about something real and constructive. Maybe if Billy would be more specific about how he made his stock setup work we could learn even more. One guy said it come up off the ground two feet. I'd think that without them you'd at the very least need to allow some sort of spring adjuster. 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. Full of fuel, everything done, full of oil, lead bolted down. Even when clear rules exist, the track officials are often reluctant to enforce them. If there is, try to adjust the brake bias to eliminate the adverse condition. . 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. To download a copy of the E-book, simplyclick on the link below. Stock chassis that has been: Boxed, second "inner" frame tube added, suspension pickup points doubled and gusseted, rear frame notch (for future, wider tires), cross braces at front, rear shocks, and rear of frame. 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. But the most useful rear steer will only occur on acceleration and not at mid-turn. This force is resisted by the ball joints and control amrs. Pure Stock Tech. When the track is cooler, you may want to loosen the car some. Ackermann is easily checked by using a laser system or strings. What do I do if the car is loose or tight throughout the corner? I ran a street stock/sportsman from 1995 to 2000 with a metric frame. I remember qualifying times in the 19.6 to 19.7 range. Maybe not on little tires either. S3 - Street Stock - USA $4.00; S3 - Street Stock - Lanier $4.00; S3 - Street Stock . Polyethylene Film / PE Sheet It seems like it is the modern buzzword for describing the goals of chassis setup. Each end has its own moment arm length and resistance to roll as well as other factors. I was also wondering, are there any tricks you have to make your tires wear slower without damaging speed. 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. Taipei, Taiwan. The front geometry on a metric car isnt as good as a Camaro though. I'm a former NASCAR short track driver and league administrator for SASCAR. I'm thinking about building a B Body for dirt track racing. A 1/2 inch height change from level can make significant handling changes. Aero Package Check your PM's. In this article, we explore the possibility of russet mites, thrips, spider mites, and other causes of leaf damage. in Exotic Race Cars on a Real RaceTrack, Copyright 2000-2023
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. Always try to start with the track bars first. Motorcycle. 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. We had no idea how popular and successful this line of chassis would be. A level panhard bar ( same mounting height on both sides) means force is vectored laterally to the tires. 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. Fast And Furious. So, we either lower the rear RC or soften the springs, especially the right rear spring, or preferably do both. 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. These are the general rules unless you are trying to "tie down" a corner. A tight condition is the number one complaint from drivers. Wheels. I have had a lot of feedback from teams who did the same with the same results. Shocks also get to the scales whenever you can. Forum Actions: Forum Statistics: Threads: 4; Posts: 10; Last Post: I-44 Speedway-Jeg's Master of. We have been softening those setups over the years, but never intended to go to coil bind or bump rubbers. 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. Posts: 72. Home. As far as I know, all of the iRacing asphalt cars are adjusted the same way. Sliding the MC left and to the inside of the turn makes the suspension softer. 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. 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. You might try a little trail braking. rolling chassis. Last couple of years I ran the car we just used tubular ones with rod ends because it was legal and easier. Remember that drag is an important aspect of aero design. If your vehicle of choice utilizes a McPherson strut style front suspension, then your 2 pivot points would be . 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. Hobby Stock - (USRA/IMCA TYPE) Street Stock - (WISSOTA TYPE) Stock Car - (USRA/IMCA TYPE) The overall work that a shock does is to resist the rebounding of the springs and control the speed of compression. Circle Track Setup: The Case for Caster. Racing Aspirations refers to this point as the roll center (RC), but it can also referred to as the moment center. But there is still some changes to be made from track to track. How do I adjust the cross weight in an iRacing setup? Special Discount Cost- $24.95 !To download a copy of the E-book, simplyclick on the link below. In 2010 we made a good car better by a design change with the introduction of the Chevelle front clip. Then it's done! It is not advantageous to have the rearend steer to the right at any time on asphalt. It was either cheat or park it until the rules change. Page 1 of 1. Too low a ride height could cause the car to bottom out. Off-centered adjusters can be very inconsistent. I also vote for weight jackers in ALL SS or Sportsman level cars simply because they're so cheap and make life so much easier for the teams. 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. Balance is spoken of in all types of motorsports these days, even F1. This develops more crossweight as the car squats on acceleration. -3 . 03 0@ 34-.=- 2 ++(+'o $ (&%q qqqqqqqqqqqqqqqqqqqq ,&%q qqqqqqqqqqqqqqqqqqq qq (,%q qqqqqqqqqqqqqqqqqqqq ,,%q qqqqqqqqqqqqqqqqqqq qq 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. We ran the car with a lot softer set up than that. I'm thinking that a panhard bar would eliminate side to side motion but little else. The setup we choose needs to be arranged so that the dynamics are balanced between the front and the rear suspensions. I talk to lots of racers representing every form of circle track racing in every region of the country and beyond. 10. 122. Our second design in our dirt chassis line this IMCA legal metric clip car designed in 2006 was already proving itself to be a successful chassis. 358091 FAB IMPALA, NO UPPER MOUNTS. The track was a 5/8 mile asphalt and was extremely fast. You need to locate the moment correctly, and the cambers . 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 . This will help keep your ride heights in the ballpark. Samuel232. I think if I had the opportunity I could make the 4-link work on asphalt using a similar set-up that I used on dirt. The problem on dirt is the high rear roll center. 35809 FABRICATED IMPALA FRAME. This tape
For me its very hard to be consistent and to adapt to the changing track states! 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. A trend must prove itself in order to stand the test of time. Billy Becka's 29 car, as he mentioned, was fast at SAS, but THR and SAS are very different beasts. so I ran a .185 valving. I built Couchenours 99 car . About Us. The front moment center (MC) location plays a huge role in how the front end wants to work. The images used are taken from the iRacing Super Late Model setup screen. set the tone for how the parts and setup will work. First of all, the design is intended to solve several problems. 1. I drive both a metric (my truck) and a leaf spring car (ss). In Stock. If the car feels tight on corner exit, raise the right track bar. If the car feels loose on corner entry, lower the left track bar. ANYBODY KNOW OF ANY STREET STOCK RACING CHEATS/TIPS. In the last article, I talked about the uses of toe and how it affects both drivability and front-end dynamics. I better get the torch and welder dusted off! How do I tighten or loosen the car on exit? 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. Do not seek aero downforce at the expense of aero drag increase. I would rather race 100% legal with a rule book that is written 100% clear and specific, that is enforced as it is written. Chassis. If those desired angles are different, then we term the setup unbalanced. 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. I think I'll make a proposal along these lines. Wheel Covers. Since the braking forces are in the opposite direction, there is a serious resistant force created which helps prevent the front suspension from moving in compression too quickly while braking. I have little experience on dirt but can definetely notice this! In the same manner, we can lower the rear mount of the upper link and lower the upper IC. Antidive and antisquat are mechanical influences that can help our transitional phases of entry and exit. 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. Lowering the rear RC and softening the RR spring will help solve the problem. Add to . Posted August 22, 2005. I measured ours at close to 20". Anderson , IN. We cover all forms of racing in the Midwest featuring racing news, results, photos & videos.
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