A strut with its innards removed? Using a big engine. (adsbygoogle = window.adsbygoogle || []).push({}); I believe the easiest way to think about balancing the car is where you need it to be in a dynamic state. NASCAR weighed the cars prior to the races to ensure that a minimum weight was met. Consider this if you used it for an entire race and conserved your tires from lap 1. If you are missing any one of these three things, you’re going to get busted. Ah, OK, thanks for the clarification. And what do you mean by "lots of bearings"? All Through the hole, about half of the brake pad is visible. We know a racer at the local track, let’s call him Racer X, that took an aftermarket Offenhauser intake manifold and used a grinder to remove the manufacturer name and casting number. Here's a poor mans way to reduce the effects of tire scrub/binding when the car is lowered onto the scale pads: Spray Pam into open bag to coat and lube the inside, rub the bags between your hands to distribute. All rights reserved. Brake pads on GM calipers can be viewed through a hole at the top of the caliper. Often called an “innovator,” Nelson was considered a cheater by those that did not like “the gray area”. One by one, the cars started showing up with 235 X 15 tires. The more linkages we add to the suspension, the more chance […], After several years of squawking about this crap, I still can’t believe the number of questions I get revolving around the right front springs on these dirt cars we race. If you shocks are working normally they are not worth worrying about. - Measure control arm angles after each change. Lay the bag flat onto the scale pad, partially open to vent, lower the car into the bag. Are they non-adjustable? Be … I actually wish these sanctioning bodies would pull their heads out of their own asses and loosen up suspension rules so we could drop the […]. That leaves the left front brake providing the “real” braking which pulls the car to the left. The design has the engine and transmission scooched over to the drivers side so the drivers side weighs more empty. - It is best to make small changes at each corner, instead of a big change at one corner. So LF/LR = RF/RR is what you shoot for. Cheating is good, and we are going to tell you why. Just three wires are required; an rpm signal wire, a positive and a ground. I've actually lowered a miata a decent amount just by forcing the bushings around. So how do you reduce the rotating weight? Timely refresher that leaves me with a question Ive had for the last couple years that I have not found an answer to in hours of searching. Strive for repeatable and take the measurement as a data point, instead of an absolute. - Set tire pressures first. It takes skill, intelligence and discipline. Our driver then bolts the torque converter to a sheet metal wall in the trunk. In stock classes where bias controls are not allowed, there are a couple of useful cheats that can help you turn left and keep up your momentum through the corner. The biggest reason that racers cheat, though, is that winning feels good, and it’s easy to get addicted to that feeling. If you are getting beat on the track, it has to be because everyone else is cheating because it can’t be that they are better drivers, right? Then make your adjustments to get the car balanced. They still have managed to win three NASCAR Championships in a row. If you don’t believe me, the next time you’re driving in a 15 mph school zone, look down at your speedometer. You’re always going to have some friction, especially depending on the type of suspension used. We have heard of racers that have drilled holes in their shocks, drained the oil out, and filled them back up with a heavier (or lighter) grade of oil. Quoting the rules, our driver makes his case and is declared correct but it is explained that the rules will be changed to read that the torque converter will be mounted in the car. In street cars, the natural bias of the brakes is more toward the front because of the weight shift of the car under braking. Cheating also makes perceived good guys and heroes. The more people that know about your offence, the more likely you will be thrown under the bus. You could also raise the left front or right rear ride heights to do the same thing. - Bounce the car at each corner to free the suspension from any bind, then roll the car onto the scales. Can be used on the rear of open wheel modified and street stocks racing on pavement to reduce rear brake bias. It’s how we are wired. Smile a lot. Is it cheating? Come race time, you put a washer around the spark plug and tightened it down, and off your driver goes with your big engine.”. Doing this in the pits by turning on the spring adjuster nuts is one way to do this, but then the car might not have enough wedge to get off the corner. People will come back and watch race after race to see their hero win. In this case the right front spring rate could be increased to keep wedge in the car and tighten the car on exit. If you’re in the gray area, keep fighting the good fight. Let them find the one you don’t want so that they will not continue looking for the cheat you do want. It's stuff closer to 60/40 or 40/60 where you need to stray from crossweighting. To calculate cross-weight percentage, add the RF weight to the LR weight and divide the sum by the total weight of the car. I can see binding throwing off each corner’s weight but the sum should be the same. The tech inspectors catch on that he is running direct drive with no converter and ask him for an explanation. Grab a copy of my original book. Are they adjustable? A good controversy adds to the show. Ideally, you want to run out of gear at the end of the straightaway, just before you hit the rev limiter. }); Static weight distribution is the weight resting on each tire contact patch with the car at rest, exactly the way it will be raced. One of the greatest inventions to come along in a while is their “stock appearing direct drive” torque converter. Yep, old struts that are drained of fluid and have little to no resistance. This covers much of the basic knowledge often overlooked by people as our sport gets more complicated. I put the car on grease tiles so the tires move freely on the scales and then I bounce each end a couple times. Maybe there's some sort of bind in the scales. In the example at the beginning of the article, this was the problem: a cross-weight percentage that was less than 50 percent, and probably off by at least two percent. Because the transmission input shaft is driven directly from the engine, reaction is far greater than through a stock torque converter. They also say the traction control unit lowers lap times and produces cooler tire temps. If you do bend the rules, don’t say anything to anyone. We don’t need to look any further than NASCAR to illustrate this point. We are proud to report that the racer was never caught and he won several feature events. Nothing was ever found. The more power a car has, the more that static weight over the drive wheels helps acceleration off the corners. Transmission gears can also be milled to reduce weight. We had a good Miata set up for ST. If you believe that, I have some swamp land in Florida to sell you. Hang around the tech area. Do you have recommendations for such corner weight percentages? More wedge means that the car will likely understeer more in a left turn. Were these rules in response to losing great champions that were fan favorites? Remember, less rotating weight means quicker response. Talk about removing rotating weight. He later became the Vice President of NASCAR’s R & D facility in 2002. Do these percentages apply for front wheel drive cars? The more speed you can carry through the corner directly translates into higher speed on the straights. There are other effects to this than merely the mathematical dropping of spring rate to allow this to happen. Plus, it’s friendlier to the environment. Fireball was fatally burned in an on-track crash and survived 30 days in the hospital before succumbing to pneumonia. When I weigh my cars I try not too overthink all this binding stuff. Remembered mostly for the 46-point penalty for a carburetor spacer infraction on Mark Martin’s car, which cost Martin the Championship by 26 points. Mix 20-25% mitropropane with gasoline for a virtually undetectable gain. Thinking about this a little, the weight measured by the scales is the sum of the force of gravity acting on the car's mass, and the force of the springs pressing downward. While the ideal amount of camber will vary between front suspension layouts, most dirt suspensions need at least 3 degrees positive camber in the left front and at least 3 1/2 to 4 1/2 degrees negative camber in the right front. A shiny new MSD Blaster coil is easier to hide with the label peeled off and a can of flat black spray paint covering the bright red finish. Explain that you are working with him to make the racing at this track better for everyone. Which means if you’re too fast on the track, you can be judged wrong without having broken any written rule. They are stock springs, after all. Allison went on to win the Winston Cup title that year. Yes, a BB, from a Daisy Red Ryder. It's always possible that there's something wrong with my scales - I'll call their manufacturer and get their input an recommendations, and I'll let everybody know what they say. Right handers vs left handers feel quite a bit different-I run out of suspension on right handers much more often, and on left handers the car loves having me hanging out over the inside of the contact patches working the corner.

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