Page 1 of 2 - Slip-joint drag chassis - posted in General Technical Info & Advice: Im not a drag racer, but could someone with experience explain how the slip-joint rail drag chassis is supposed to work? Of course, having a pack of timeslips doesn't do you much good if you don't have any detailed information about the conditions, tune-up, or driving technique used on each of those runs. Without them, you'll never know what's going on, which is crucial considering we're trying to get to the end of the track as fast as we can. Elapsed Time (e.t.) We have to say, the set up is pretty pro. CC. Your E.T. Absolute air pressure (14.7 psi) is a constant indicating the weight of air at sea level. Their website will pop up with a visual outcome of the race. Log in; Home; The new “Call Me By Your Name” dance & the secret science behind “Drag Race” The new “Call Me By Your Name” dance & the secret science behind “Drag Race” Queerty - Matthew Tharrett • 45m. Continually Monitors Results for new Race Information-- Automatically prints Time Slips. Knowing how to read a timeslip and keeping detailed notes on each run will result in a valuable performance portfolio that can help determine what changes worked and what didn't, and keep you moving in the right direction. Funny cars are characterized by having tilt-up fiberglass or carbon fiber automotive bodies over a custom-fabricated chassis, giving them an appearance vaguely approximating manufacturers' showroom models. Diagnosing the NumbersThe data below was generated by a small-block 408ci we dropped into an '85 Mustang for last year's street car shootout ("Chevy vs. Ford: Street Car Shootout," July '02). The Eliminator Competition Drag Race Software is designed specifically for Economy Track Systems. Term Definition; Air Box ... Time Slip Given to the racer or crew after a run, it lists the reaction time, interval times, elapsed time, and speed. For Windows PC The Time Slip Simulator is a revolutionary tool that replays your races in 3D just from the details on your time slip. A car can hook like crazy, but if he doesn't have power, he's not going to go anywhere anytime soon.PT: It really depends on the car. When you get your time slip after a run, look at your reaction time. Then it’s on to your 1/8th mile, which is where some tracks stop, but this is where you see a lot of your torque. The slip of paper you get after an exhilarating quarter-mile dragstrip ride is much more than a license to brag (assuming it's a stellar run). The time it takes a vehicle to travel from the starting line to the finish line. ), which measures performance and determines handicaps during competition. This is so you don’t look foolish to your friends when telling them what kind of times you pulled at the track, but you were reading off the wrong section, or you know what number to recite when someone asks about a certain distance. VINTAGE AIR RELEASES NEW CAST FRONT RUNNER FOR ... Video: Here’s What You Need To Consider When ... VIDEO: THE PROCHARGER SUPERCHARGED C8 CORVETTES GET EVEN ... Comp Cams Designs XD-A Adjustable Pushrods for Improved Performance, Richard Petty and Omaze Giving Away Customized Camaro for Charity, GBodyParts Now Offering 8.5-inch Posi-Trac Clutch Rebuild Kits. A locking differential will do just that: it locks the gears so that torque is provided to both drive wheels. We recommend the Time Slip Program to be operated on the Announcer P.C. We're proud of that. > Drag Race Rollout Part I. Disclaimer: While based on facts about drag racing, this page contains the personal views and opinions of one racer - Michael Beard In order to get good reaction times, we must understand the drag racer's worst enemy (besides himself), the Christmas Tree. Well now you can with the Time Slip Simulator, a revolutionary new drag racing tool that lets you replay your runs in 3D just from the data on your time slip! Recall that elapsed time and reaction time are totally separate entities, but are closely intertwined in drag racing. Just like a professional athlete, you can now replay you races, analyze the results and turn on more win lights. Make it a point to write down all the details immediately after a run. Some traditional drag racers have made the switch over to N/T racing to see what the appeal was for them. Since dragstrips are located at various elevations and regions all across the country, it's pretty rare for any two tracks to experience identical weather conditions, and it's not uncommon for the weather to change throughout a race day. The Street Race … World Time Attack is an excellent category for aerodynamic development and this can be seen by the extensive development that is being undertaken by all of the Pro Class teams. So the next time you're at the track, don't be afraid to ask someone in the pits if they know the current weather conditions...it could explain why you're going faster or slower than you expected. Or if you have a time slip – if you race at a track that gets a time slip that’s different, you know, send us an email or post a comment on the website so we can take a look at it and maybe it’ll give us something to talk about next time. We don't believe in fluff, and we tell it like it is. Sometimes you can pull right up, sometimes you’ll have to sit behind cars, but whatever you do, don’t hog the hut by sitting in your car analyzing your slip; grab your slip and go find somewhere else to read it. why?? Leaving the starting line on time is critical to successful drag racing. Blower cars have a little longer slip time, usually eight tenths to one second, because they are trying to harness more power and, with their three-speed transmission, will be in low gear much longer than a Pro Stock or nitrous car.” It may not sound like much, but the differences in all these numbers are huge. His time slip would show 22.50 seconds at 69.97 mph. If we abort a run, it'll then help us predict what the pass would have been. The third, in a row, Fred said meh and still kept her over Sederginne, who was in the bottom for the first time, an off night. Drag racing is a type of motor racing in which automobiles or motorcycles (usually specially prepared for the purpose) compete, usually two at a time, to be first to cross a set finish line. Set up for additional Printer to print lost Time Slips. Your E.T. NHRA Correction FactorsWe get a lot of letters and e-mails asking why some of our project vehicles are slower than readers think they should be. K) STREET RACE SMALL-BLOCK POWER ADDER: The Street Race category is the most restricted one in Drag Week, requiring stock bodies, interiors, and suspensions. 's and big mph on the top end require an abundant amount of air traction that our hometown track just doesn't offer. You can even get a negative number if you leave before the light turns green, this happens a lot, and costs a lot of drivers the race, it happens to all of us. Top that off with a high-elevation track and you can forget about obtaining optimum performance from your combination. Since 1984, the NHRA officially uses CompuLink timing systems at venues on their professional drag racing circuit (includes the Christmas Tree, control units, timing sensors, cables, program software and time slip printer). Get the edge on the competition and try it today for FREE! The timeslip on the left is from a Friday evening grudge night at LACR; the one on the right is from the following day at Carlsbad Raceway in Carlsbad, California. When you (hopefully) blaze down the track, you’ll turn off shortly after crossing the light sensors that display your time. If the 330 intervals are great and I'm slowing down, then I'll check the air conditions or try to pinpoint a problem with the drivetrain. No tuning changes were made during individual testing days. Since 1984, the NHRA officially uses CompuLink timing systems at venues on their professional drag racing circuit (includes the Christmas Tree, control units, timing sensors, cables, program software and time slip printer). The queens of “RuPaul’s Drag Race” brought up #BlackLivesMatter and the deaths of unarmed Black men in a candid and emotional discussion last week. Ive seen several new chassis of this type from the Ohio & Virginia areas being sold on ebay in the past year. The 5135 compound is typically used in a drag racing application where the coefficient of friction is greater and the window of modulation (slipping the clutch) is less. You may be surprised at how well your car can 60-foot again once you know where to stage the car on the starting line. What you’re hoping to see here is all zeros, but even pro racers can’t get this part perfect every single pass. (I3): Secondary timers record the time it takes to cover 660 feet.18 mph (I3): Secondary timers record a vehicle's miles per hour.1,000-Interval (I4, when given): Secondary timers record the time it takes a vehicle to cover 1,000 feet.14 e.t. There are at least two essential types of friction force, sliding and stati Drag Racing reaction times explained by Tony Pedregon, a 2-time NHRA Mello Yello Drag Racing Series Funny Car Champion from Torrance, California. In this second installment of the series by The Tuning School about how to navigate the drag strip as a beginner, President Bob Morreale explains how to read your time slip. Timing system manufacturers. But if you're like most of us, maybe you take a quick glance at the 60-foot time, e.t., and top-end mph then simply stash the slip away between the seats. So what are you looking at, exactly? For 60 foot, 330 foot and 660 foot split as well use our quarter mile calculator with incremental. We’re here to talk about what a trans-brake does and how it can help your ride. Go rounds with the Time Slip Simulator! We were surprised to find we had better traction at LACR, however, the lower elevation did allow us to run slightly quicker by the 330 marker. Find your favorite series or VH1 music on the television schedule section. This will help you improve your time and keep the internet trolls at bay. We do … At this point, the rest of the track goers know what your E/T was, but you have to make the trip to the time slip hut before you get to find out. Each Drag Race can be divided into four different categories that you must master in order to achieve victory against the most difficult opponents. That means a 12.00 at 112 mph pass at LACR's high elevation would equate to an 11.62 (12.00 x 0.9679) at 115.80 (112 x 1.0339) pass at sea level. Include any changes or modifications to the vehicle, launch rpm, shift points, tire pressure, and weather and track conditions. by 0.9679 and mph by 1.0339 to "correct" to sea-level conditions. To better understand what constitutes good-air and bad-air conditions, we need to first get familiar with a few basic terms: absolute air pressure, barometric pressure, and humidity. The must have coaching and training tool for drag racers. Set up for additional Printer to print lost Time Slips. The straightforward answer is that killer e.t. Developed by Kym Oberauer, an Australian Drag Racer with a degree in computer science, the Time Slip Simulator is the culmination of years of planning and development. Los Angeles County Raceway (LACR) is located 2,700 feet above sea level, and most cars typically slow down by four tenths and three mph even on a good day. There are two main factors that dictate a vehicles aero performance and these are termed Lift and Drag. Use this to predict what your time card will be on the quarter mile. In this second installment of the series by The Tuning School about how to navigate the drag strip as a beginner, President Bob Morreale explains how to read your time slip. It could have been the air quality, maybe we lost a cylinder, or it could even be a sign that our tranny or converter is going south. Below is a brief breakdown of how to master each stage so you can win Drag Races in The Crew 2. Holley Releases LS Front-Feed Lo-Ram Intake Plenum Top with Burst ... VIDEO: Why Do LS Engines Have Steam Tubes? PT: If the 60-foot and the 330 intervals look good, we'll look at the gains from the eighth-mile to the quarter-mile. Developed by Kym Oberauer, an Australian Drag Racer with a degree in computer science, the Time Slip Simulator is the culmination of years of planning and development. In order to make a close race out of it, each racer selects a "Dial-In" time. For a list of correction factors for other tracks and elevations, log on to www.carcraft.com. Reaction time, as a number on the ET slip, measures the driver and the vehicle performance at the starting line. The must have coaching and training tool for drag racers. Locking Vs. Limited Slip. Between 1,254 feet and 1,320 feet, the average speed between the two lights produces the mph on your timeslip. Yeah, so anyway, hit be back if you have any questions or thoughts on reading your time slip. Time is a drag racers best friend and enemy. Even though you can't hear detonation on most race engines, your time slip will reflect it. Stay tuned for the next installment on beginner’s drag racing tips. Reaction Time. will stay the same on a particular run whether your R.T. is .550 or .900, while your R.T. can be .550 each run, but the E.T. The reaction time has no effect on your E/T, the timer won’t start until you start accelerating. Most tracks are a quarter-mile in length; but there are a good number of eighth-mile tracks too. On those rare occasions when we do use the correction factor, we don't neglect to print both the corrected and uncorrected numbers. In drag racing, you don’t have the heat problems of other forms of racing, so a lot of these gazillion-tube shock technologies are a moot point.” According to Saffell, one of the biggest physical differences between the mono and twin-tube shocks is the way in which a mono-tube shock dampens more effectively to control tire shake. Go rounds with the Time Slip Simulator! The must have coaching and training tool for drag racers. I decided to partner with them so now “Time Slip Simulator” will now be an option in our new Crew Chief Pro 7.950 version. In essence, the motor is starving for air. You don’t have to deal with corners and bumps in drag racing, which is where the two designs are drastically different. Recall that elapsed time and reaction time are totally separate entities, but are closely intertwined in drag racing. 60 Foot Elapsed Time = 1/8 Mile Elapsed Time = 1/4 Mile Elapsed Time = 1/4 Mile Trap Speed = This calculator estimates your 60 foot, eighth and quarter mile elapsed times and trap speed when given the weight of the car and flywheel or wheel horsepower. After that, it’s 1000’ and then quarter-mile E/T and mile per hour. If we run decent 330 times, then we know the chassis is right where we need it and we're just along for the ride at that point.CC: Would you say the 60-foot times are any less valuable than the 330 interval?PM: All the numbers are important, but some people really get freaked out if the car won't 60-foot. And what type of transmission will you be using? Above all, it's free. There’s a lot of factors at play during the 60’, which is still at the point where your driving is going to make a difference, but your traction also plays a part here too. And if you’re stuck with a slow car while at a street night with some friends, getting great reaction times will allow you to gain at least some bragging rights for the night. If you find yourself saying "my car ran 3 to 4 off for no reason" this may be your answer. It is important to notice that no sliding is occurring between the tyre and the track, which makes the term “slip angle” somewhat of a misnomer. This is how long after the light changed to green that you left the line. Below are terms that you will hear The Mopar super stock spring name came from the fact they were developed in the late 1960s by Chrysler for its NHRA Super Stock race cars to give them maximum traction with minimum research and an advantage over the GM and Ford Super Stock cars of the time. However, the clocks recorded the long time. Drag Race Rollout Part I February 25, 2016 Wayne Scraba Drag Race 101, Guest Columns, How-To and Tech Tips, Tech Tips 0. The ET was 3.00 seconds high but the speed was almost unaffected, why?? This will keep the roll couple the same, yet the springs will plant the weaker tire. Breaking Down the DigitsA timeslip is nothing more than a printout that records in detail how quickly you traversed the 1,320 feet from start to finish. Reaction times work on a simple principle. The angle between the tyre path and the wheel pointing direction is called Slip Angle and it is of fundamental importance for the knowledge of how a race car works during a corner. His time slip would show 22.50 seconds at 69.97 mph. To win regularly in bracket racing, your E.T. Everything you need to know about xDrive, BMW's all-wheel drive system. We recommend the Time Slip Program to be operated on the Announcer P.C. Open in app; Sign up. Time for some content more worthy of your time: Liam Coulter found a new side of … Landscape version of the Flipboard logo. If your car runs its fastest at a certain 60-foot, then being off by one hundredth can mean the difference between winning or losing by a full tenth.CC: At the end of a pass, what are you looking for?PM: Consistency. Tommy Rainer, a long time Limited Street racer from Georgia, said he was tired of all the "hoopla and rule changes." Let's take a closer look at what all those numbers mean and how you can use them to your advantage. How Drag Racing Reaction Time Works If you’re just getting started, reaction time is a great way to prove you sorta-kinda know what you’re doing. When read properly, the timeslip can tell you exactly what the car is doing at any given moment of a pass.Troy Pirez: Numbers are everything. Funny Car is a type of drag racing vehicle and a specific racing class in organized drag racing. By clicking Sign Up, you agree to the  Terms of Use. It’s no big secret that drag strip starting systems are based upon a pre-stage and a stage beam. Drag slicks are racing tires which offer uncompromised traction. If you drive the car to and from the track and run bias-ply DOT drag tires, you need a set of street radials to drive it home. K) STREET RACE SMALL-BLOCK POWER ADDER: The Street Race category is the most restricted one in Drag Week, requiring stock bodies, interiors, and suspensions. may change. It measures the time from when the last amber comes on to when your front wheel clears the start line beam. TP: Not at all, but to me the 60-foot is more of a sign of torque and power. Driver's Round TableGoing fast doesn't happen overnight. Our quarter mile calculator for drag racing provides the et time (seconds) and trap speed (mph) based on the horsepower and weight of the vehicle. I then analyze a time slip and explain what it is telling you. Our theory is to run what we brung. No Time or N/T means, as in grudge racing, no times are given out by the announcers or displayed on the scoreboards. Being on drag radials, if I can optimize my 330 e.t. I assume that the track where you are racing is using a .500 tree, and with .500 being a perfect reaction time. *Source: Mopar Performance's Direct Connection Performance book). Keep all your timeslips together-ideally in the logbook that you record these details in. There’s a lot of things you can do as a driver to improve this time, you can also improve your tires and suspension; only after controlling these factors completely can you move on to tuning. I assume that the track where you are racing is using a .500 tree, and with .500 being a perfect reaction time. As the lining on the clutch disc wears over time, the clutch starts to slip and later, forward momentum can be affected. “No matter what class, the driver with a better reaction time has a better chance of winning the race. Just finished Drag Race Holland. US 131 Motorsports Park is a ¼ mile drag racing facility. The driver reacts first, with a foot off the clutch, a finger off the transbrake button, or a foot off the brake pedal. Since all tracks vary, we'll take the numbers from the intervals and plug them into our Auto Meter Data Logger to see how a current pass compares to another. One of the articles he read mentioned a trans-brake but didn’t do much to explain what it is and why a drag racer would need one. While this is great for a drag strip, it’s not exactly the best for road racing or street driving where you’re constantly making turns. Poor conditions would be barometric readings lower than the atmosphere absolute air pressure of 14.7 psi, higher air temperatures, and higher humidity. Of course, you want to leave as soon as the light turns green, but no sooner. Drag race DOT-approved street radials weigh more than a comparably-sized drag slick, but the radial construction has such a low rolling resistance that the extra weight is hardly an issue. Car Craft: How important is it to understand the numbers on a timeslip?Pat Musi: Very important. A split-second is close to an eternity as races are frequently won and lost by mere ten-thousandths of a second. will stay the same on a particular run whether your R.T. is .550 or .900, while your R.T. can be .550 each run, but the E.T. This will tell you a lot about your top end and how well your horsepower holds out. The composition 5191 is typically used where someone needs to slip the clutch a lot, most commonly used in truck pulling. Dial-in's are the cornerstone of Bracket racing. Not to make fun, but the descriptions he read led him to believe that it was something that helps the car slow down at the end of the run. You'll also need to address several other variables, namely, how efficient your chassis and drivetrain are. It would be great if everyone could afford to have a data acquisition system on your car but most racers on a budget have to make do with the information on the time-slip that is provided by the track. ... Leaving the starting line on time is critical to successful drag racing. While this is true for street driving, drag racing is different. By keeping records, we can diagnose the situation quicker and try to get ready for the next round. Tom Kundrik, a Mickey Thompson race technician and drag radial racer himself, says, “Remember, drag radials do not work on all cars. In race trim, 1/10-scale electric touring cars can attain close to 50+mph on any given track…limited only by the length of the straightaway. Timing system manufacturers. More importantly, you need to know what the car runs on a regular basis to effectively use the information.CC: What numbers do you concentrate on most?PM: We concentrate on all the numbers equally. Methods for generating lap-times have evolved over the course of organized drag racing's 60-year life. It's because his racetrack was 1,318 feet long instead of 1,320, and in those last two feet this truck usually gains an additional 0.03 mph. There are so many variables in a car that runs over 200 mph in the quarter-mile and knowing every interval is vital for peak performance.TP: My car usually runs the same after the 330 [foot] interval. The Economy Drag Race Software allows track operators to run races, store results, create race categories, and enter racer information quickly and easily from a computer. The stage beam is situated approximately twelve inches past the pre-stage beam. Bad runs will affect your weather station’s ability to accurately predict your ET. When building a race car, one of the most misunderstood parts of the build can be the roll cage. The Time Slip Program Runs independent of the Drag Race Computer. My point? Much of a great ET is made by a great launch. Friction force falls under the larger overall category of “contact force,” and it’s defined as the force exerted by a surface as an object moves across it, or makes an effort to move across it. The air was decent for both days of testing, and the only difference was in the track elevation. The Burn, The Start, Gear Change and Boost usage are the vital aspects that each Drag Race shares. Compare it to your opponent. This is serious business and not for the faint of heart, as many of these events are winner takes all. It’s not. Can anyone explain how Abby OMG "won" 4 lipsnycs? This is the reason I tell anyone who drag races to not use a thermostat. Of course, you want to leave as soon as the light turns green, but no sooner. The second time she was pretty strong and for the story and her mental health it made sense for Madame Madness to go home. This month’s article is all about analyzing your run data, and removing any bad runs in your weather station so you can improve your ET predictions. She wakes up for power and performance and only sleeps to charge up for the next project that’s heading to the track. A drag race is initiated by the Christmas Tree, an electronic lighting device that activates a timer by each vehicle, which is then stopped once that same vehicle crosses the finish line. A number of years ago, famed race car designer David Bruns explained to this writer that “springs put the power down, anti roll bars tend to lift the inside wheel.” Therefore if wheel spin is a problem with low powered cars, increase rear spring rate, and reduce swaybar stiffness at the rear. Prints Time Slip when Drag Race Operator saves results. The first one she slayed. From autocross to drag racing, Elizabeth is there with you, so stay tuned for her unique perspective on horsepower news, builds, tech info, and installs — with her, it’ll never be boring! Let's say if we typically gain 28 to 30 mph and for some reason only managed to go 24 mph faster, then we know there's a problem. 1 P. C. for the Drag Race Operator; 1 P. C. for the Administrator (Race Director) 1 P. C. for the Announcer - Also controls the Time Slip Printer; 1 P. C. for the Office; Up to 10 or more PCs can be connected to the network and PC distance apart is limited to your network cabling. Absolute Air Pressure, Barometric Pressure, Humidity...Oh My!There's more to racing than dumping the clutch or releasing the transbrake and holding on for dear life. Knowing what you’re reading will help your tuning. "There are more opportunities to race especially at local tracks," Rainer explained. What you’re hoping to see here is all zeros, but even pro racers can’t get this part perfect every single pass. These distances are measured in several individual increments.Reaction: The time it takes you to get the car to move forward after the tree turns green.60-foot (I1): The time it takes a vehicle to cover the first 60 feet of the track. A manual transmission may have a distinct advantage over a conventional factory automatic, but a transmission specifically built to handle the rigors of drag racing with a custom-built converter matched to the engine may be much more consistent. We break down the rules bar by bar using a Chris Alston's Chassisworks pre-bent cage on a … To get an insider's perspective, we convened a panel of seasoned heads-up veterans featuring NMCA Pro Street Champion and former NHRA Pro Stock racer Pat Musi, NMCA Drag Radial Eliminator racer Troy Pirez, and NMCA Real Street racer Patrick Topolinski from The School of Automotive Machinists, to find out how reading timeslips helps them stay at the top of their game. I looked at about 10,000 runs, and here is the density curve of how many times a certain reaction time happened: It starts at about -.500 because LB3 (left before 3rd light) data is rarely given, and goes well into the 2+ second range for some reaction times. Here's a tip-always compare your home track's starting-line rollout to every track you race at. An 11% driveline loss is assumed for Wheel HP. The higher barometric pressure helps force the air into the engine, while the low air temperature along with low humidity creates a much denser charge with a high oxygen content for greater combustion. Eliminations The portion of an event that ­determines a race winner, usually Sunday. : Secondary timers record the time it takes a vehicle to cover the quarter-mile14 mph: Secondary timers record a vehicle's miles per hour; also known as the speed trap, these timers are located 66 feet before the finish line. On down will be your 330’ mark, which can tell you a lot about your shifts. The first read out on your time slip will be the R/T, or reaction time. Drag racing reaction times. However, the clocks recorded the long time. If we can post decent numbers at our track, rest assured you'll be flying anywhere else. The more time you can shave off your 60’, the better your overall E/T will end up being. Drag racing lost another of its nitro-racing veterans Sept. 25 with the passing of 1970s Funny Car star Bill Leavitt just about a week shy of his 81st birthday.
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