They know something. Caster seems to be the red-headed stepchild of suspension adjustments. I know that in RWD bomber classes that do not allow locked rear ends we wind up running a lot wedge and put a lot of weight on the LR to get it to hook up the rear wheels,,,when we switch to locked rear end we decrease the wedge and remove weight from the LR. In the case of the Mopar cars, there is really only one ratio to run at Spartan. So normally, as the racetrack gets slippery you add front brake. Must have 1.25-inch minimum O.D. Raise the rear ride height one more inch, move weight up and to the right in the car, and soften all of the shocks. With camber in it allows the tire to stay in contact with the road surface longer and turn the car better. I think there are a lot of drivers who say they dont like racing front-wheel drive cars, but I think thats mainly because they have never driven a properly set up one. Shims between the spindle and axle at any of the bolt locations will tilt or turn the spindle in relation to the axle. For stiffer suspension springs and stiffer swaybars and Torque Sensing Differentials,,. Imagine drawing that line, out 45 degrees to the top left. In short, they will be all over the track. 7. Now if you head up North and go someplace like Learnerville, that's a track that can get slick! These are used for adjusting the camber on the front. Is it fastest? All of the action happens up front. Properly executed trail-braking shifts weight from the rear of the car to the front, increasing grip on turn-in. Glad we here in Michigan helped out a little, How well do the Neons run against Hondas at your track? A promoter will often plow up a track during the week preceding the event, water it throughout the morning of the event, and then roll it while still pouring water on it until practice time. Front and rear firewalls must remain and have no holes. This latest video by Cleetus gives the highlights from his weekend racing at the Cleetus McFarland Danger Ranger 9000 On Dirt . You should run a fuel cell, I know some tracks say you don't need one but it's not really that costly and will help you out in the long run. A few weeks ago I caught up with Canadian pro driver and BFGoodrich Performance Team Member Andrew Comrie-Picard, who has all those titles I just mentioned and has spent a lot of time teaching drivers to be fast with front-wheel drive cars. Disconnect the front and stiffen the crap out of the rear has always been the mantra for front-wheel drive set up, and for good reason: It workskinda. All the weights on the nose, all the pulling happens at the nose, and all the steering happens at the nose. > Do want more weight % on the front or the rear? Stiffening the rear bar does trick the car into rotation, but it also can result in a car that is not as evenly balanced as one that uses bars at both ends. The one significant drawback to the loose rear is during rapid transitions (slalom) as local club course designers seem to really like them. You have to run some amount of caster and like most setups it's about finding the optimal amount. The front wheels do everything, turning, braking, and accelerating whilst the majority of the car's weight is over the front wheels. 6-8 degrees of negative camber generally works well in the RF. In fact, we set them up to have less. The LF tire will be doing less work with these changes but should still be touching the ground, and the Ackermann will help it provide turning power. Front Wheel Drive, dynamics and tuning using ChassisSim 22,379 views Sep 13, 2016 This video explains the dynamics of front wheel drive (FWD) racing cars and how to tune this using. To run a single setup throughout the day is not going to get the job done in this day and age. Don't put the weight in front of the front wheel and don't add any behind the rear wheels. According to the National Speedway Directory, there are over 700 dirt oval tracks in operation in the US. After all your very life may depend on how well the roll cage is welded together. Franklin: You've got to keep it loaded on the springs more. Sometimes you can spin the tires and make it worse, and then sometimes you can spin them and that friction opens it back up. 4. There is only one way to stop a severe pushy or loose car, and that is to lift off the throttle. Spring split at the front also has less affect and has more influence on entry. There will be less grip, but not to the point of going overly soft on the springs or introducing great amounts of rear steer to turn the car. A more sideways driving style is sometimes helpful for mostly aerodynamic reasons. Any other setup will put the engine over 6100 rpms and will cause the built-in rev limiter to kick in. Easy Steps to build a Pony or F.W.D. Only top 5 can claim and they must be on the lead lap. The hardened track condition may only occur for one heat or so. I don't think enough people think for themselves to actually test and find out (and it certainly is a pain to do, so I understand it). Minimum three-inch wide five point safety belt assembly required (Y-type shoulder harness not allowed) must be mounted securely to roll cage, recommended to be no more than one year old. You can run a lot of toe in a fwd and a quarter inch there might help as well. Five years ago wed be able to pull a few fuses or sensors and be able to override it, but its gotten to the point where its extremely hard, and all the cars now are CAN-BUS wired. do not allow excessive lightening of the chassis/body,,like your class does. For that reason, it is very important to lessen the amount of steering input as early in the corner as possible before you start goingto throttle, which will give the tire a bit more grip to work with for acceleration out of the corner. Thats accelerative force. The track has now blackened over and the edges of the groove are loosening up with the surface material turning to drier sand. You will need to keep a lot of information on your tires. tricknologyFebruary 28, 2007 in Grease Monkey Hangout, Here is some of speed secret stuff for FWD 4 cylinder cars,,,these guys run in Lansing Michigan and are FAST with Stock 4 cyl. JalopRecs | 'Tommy Boy' Is One of the Best Car Comedies of the '90s, Rainn Wilson is Tired of Tesla and its Yoke, Racing Tech | How F1 Sanctions Wind Tunnel Testing for Close Racing. Under these conditions, teams using softer RR springs with Panhard bars high on the left side and low on the right side and with plenty of rear steer will find trouble. WARNING: This is a big web page, about 180 posts, over 600K. Simply unzip the below folder to your BeamNG.drive AppData folder C:\Users\username\AppData\Local\BeamNG.drive\0.28\vehicles. 11. This term is widely used when describing a 4-link dirt modified right front shock or asphalt cars front shocks. No weight jacks, modifications, racing components, aftermarket or homemade tractions devices allowed. Ok, so now you have a car with a roll cage, seat, belts, fuel cell and the suspension has been set. So the car feels looser. The LF spring = 375; RF = 350; LR spring = 185; and RR spring = 175. In a front wheel drive car most of them are running 2deg out on the left front 7deg in on the right front 1.5 In on the right rear 0 on the left rear. It doesn't make a great deal of difference which side you adjust as long as it's only a minor change. HS: As the track begins to dry out, the surface will start to become black and a little slick. It is time to soften the car, move weight over to the right, and lower the rear moment center more. what tire sizes do you run? 9. Maybe the same thing is happening here with the FWD cars? This term is widely used when describing a 4-link dirt modified left rear or left front shock. Work with your cars electronics, not against them, Make the most of where your cars weight is, Expect your FWD skills to translate to AWD cars. All-wheel drive is an increasingly common feature on cars today, from grocery-fetching Subaru. No turbo charged, super charged, rotary engines, or engines utilizing variable cam-timing. So lets take a closer look at what it takes to get one of these wrong-wheel drive vehicles around the trackquickly. BRAKES: Must be steel, unaltered, OEM operative, four wheel disc or drum brakes, and match year, make and model of car used. Racers of all classes are getting smarter by the year, and getting to the front is a matter of staying on top of the most current technology. Noticed they had a FWD class for 4 cyl. Pretty much stock 4 cyl. 2. Driver-side window net required, minimum 16x20 ribbon or mesh style, and must be mounted so latch is at top front of window. and .095-inch wall thickness tubing. 13. And you do that with better tires.. Rear Tension Struts feature a high-durometer bushing material designed for heavy duty and competition use. Eckert: If your car is too free in the corners, what you've got to do is back your corner up onto the straightaway. This can vary a little depending on the car and the tires being used, plus the driver preferences. A commonly used technique drivers use to induce the car into getting entry rotation is trail-braking: decreasing, or trailing off, brake pressure as the car approaches the apex of the corner. In the case of a rear-wheel drive car, you get those two rear tires, those two rear palm-prints, they always get to push you forward, and the front tires only have to turn you side to side, and usually stop you, too, because thats where most of the braking force happens of course. Also read the old messages on this 4 cylinder tech link, they have a lot of guys who know both FWD and RWD 4 cyl cars,, so ask your question here or on the Spartan Speedway forums,, the michigan guys are alway willing to help.

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