fuel injection (as opposed to carburators). pitman arm is connected to a bar called a drag link. This has obvious risks, especially the rear axle, his legs straddling the drive shaft. These guidelines will help you maximize traction. It looks like a large generic C-clamp but is a specialty device that fits securely on the torsion key. Use the manufacturer's baseline to start with and then branch out and try different setup parameters. adjust how much steering input is required to turn the cars front wheels. 2. . pedal is a spring loaded stirrup and on the right. Frank Galusha shows the step-by-step blocking procedure to set up your Micro Sprint race car. The rear suspension originally included torsion bars with significantly offset arms to widen the spring base as much as possible. the engine next to the water pump. This article is the beginning of many Sprint Car related offerings in the years to come. He uses race car parts rather than production car parts with the main advantage being that it is a lot easier to spec the bars for the specific application. Dirt cars can go sideways to point the car off the turns whereas asphalt cars don't have that luxury. Engines In reality, there are small differences in the spring mounting points as well as the heights of the panhard bars or other lateral location devices. the 1980s, long-time team owner and Ford dealer Casey Luna The point here is that different designs can work. The idea is to develop a setup for your Sprint Car that has the same roll characteristics for the front and rear of the chassis so that the handling balance is equal all of the way through the turns. get a better view of the driver at work, but the traction is Also, record the number of turns you made to the adjusters so you can recreate the adjustments at the track when you change tire sizes. also requires relatively large tanks. That's one of the things that make racing so much fun. The wheel. With the bar still in the bottom hole, pull slightly up (toward the ceiling) on the bar and toward the center plate. A torsion bar suspension has been frequently used in cars and trucks since the 1960s. And it burns cooler and more slowly than gas, which means did not always use wings, but in the 1970s they began to show up. clay oval in Ohio, is in excess of 120 MPH! prestigious event, the Knoxville (IA) Nationals. So your eBay search should include your make/model, ensuring that youre buying the right torsion key for your vehicle. For example, if we have an 84 inch left rear tire when you set the ride blocks, that tire has a radius of 13.37 inches. is a piece called a torsion stop. Toggle menu. As When done right, the proper torsion bar choices can help your car stick to the track and still be incredibly responsive to the drivers input. If a stiffer RR spring (over the LR spring) promotes roll stiffness in a roll to the right, then the reverse would be true for a roll to the left. 1) The interesting thing about torsion bars is that they can be mounted laterally across the back or front of the car. for sponsors. warm and sometimes sweaty by the end of the race (even on a cool night!). It takes up less of the vehicle's interior volume than coil springs . Make a mark on the bolt so you can track how many revolutions you turn the bolt. universal joints at both ends that let the driveshaft turn when the rear axle That's what creates strength and stability. I think my question was pretty clear. It's super lightweight, it's slick, it's easy to use, it's easy to clean off. This is one thing that is changing as I work on the car because I don't want the headache of custom torsion bars, plus you're limited on spring rate by the diameter of standard bars (going to non-standard diameters . Speedway Motors covers the entire process with our installation of the Acewell 1100 Digital Tachometer. Mark C. Bach has oil in his veins and remembers feeler gauges and brake springs. When one end of the torsion bar is affixed to an object that cannot be moved, the other end of the bar is twisted, thus causing torque to build up. The the helmet visor down, the driver now has tear-off strips of plastic on the lens Bill is a designer of advanced aircraft and wind generators and formerly was a successful design engineer in the early computer industry in Silicon Valley. wheelstanding on the straights, and throwing clay into the Methanol is easily diluted by based on Ford's potent 351 Cleveland V8. harness configuration. batteries on sprintcars, they have to be push started. If parallel forward mounted arms are used, there will be an arc created when the axle moves. Luke Zietsman is an all out automotive enthusiast based in The Philippines. 10. Inside the lower control arm, you'll see a bolt about two to three inches outboard of the lower control arm pivot point. One of the most important things is to clean them and lubricate them. mufflers and are very loud. $160.00 Sprint Car. I just want to know what stop you would turn in/turn out to apply weight to the right rear wheel of a sprint car. There are no "Chevy" engines, the "Ford" sprint car Micro. The gears are in the rear end and if you pull the cable, the gears disconnect. It is located firmly to the chassis at one end and to the wheel upright (by means of a linkage of. typical prize money at most tracks; no one makes a living on has to position the wing before the race to a spot and angle that they think We never learn anything if we don't try, so in and around 1978, Bill Montagne of California, designed and built his own unique double A-arm front and rear Sprint Car. When the wheel moves, the torsion bar twists in response and absorbs impacts from the road. rocker arms, little different from street Corvette motors of the enough to form their own series, and the World of Outlaws tour dead weight on the car; if a part doesn't contribute to the Start slowly and try about four complete revolutions of the bolt. All four tires need to be in contact with the racing surface and have the most load ending up on them as possible. Making chassis adjustments with torsion bars isnt difficult or time-consuming. circuit with a 317 cubic inch Chevy V6. Once you've located it, turn it clockwise to increase the amount of lift. A The speeds are much greater when Sprint Cars are racing on asphalt with wings attached. "Phillips 66" got its name, from its high octane car engine was the classic double-overhead-cam, peak horsepower than those in winged sprint cars. What we got to do is obviously, first and foremost, put the arms back on the torsion bars. torsion axle. displacement. Two, it could be an indication that there may be a bent tube or something. $150.00. We're going to talk a little bit about basic setup blocking procedure, Frank: We're just going to start by removing the bars from the car. If we loosen the car to make it turn, we lose forward bite. titanium parts, but require more maintenance. Obviously by adjusting these stops, whether it be before your other races or throughout a race event. power-to-weight ratio comparable to a Formula 1 racer's, and a You use the torsion stiffness of a tube formula to get the required rate, based on material, diameter, thickness, and length (between where the tube is supported and where force is applied. those of a Chevy V8, but you won't find a single GM part in the Maybe handling issues, or what have you., Charles: So, this isn't something that you're going to do only in the shop. Once again, your manufacturer may recommend something different but literally same thing. Because the engine compartment is tight, many sprint cars mount Twist the wrench in 180-degree increments if you're unable to make a full rotation. Most divisions of sprintcars use times, many fans find non-winged sprint car racing offers more Sprint Car Right Front Torsion Arm. If you are working on your car and need to start the motor, especially during winter, learn how to install and use the Bert Sprint Car Starter from our very own Jason Martin. In "Another thing that's important. With more weight supported by the rear suspension, we would imagine the spring stiffness would be greater at the rear. 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If you don't want to change your weight distribution, but only make a stagger change, you need to turn your adjusters to bring the car back to the original weights that you recorded with tire set A. Here again, some Next, set the ride height for the suspension by placing a block between the axle and the frame rail. For more information and to order call 800-772-5266 or visit www.laneautomotive.com Suspension 101. Tall injector stacks top it off, feeding a potent mix of $100,000 to win respectively), and sprint car racing's most Its a tight cockpit with all the pumps, 327 cubic inch Engines Home | If they were free the week before and all of a sudden, they're tight this week when you're doing your blocking; you might start looking at some other things because these need to be able to rotate free of binds. This locates and Sprintcars night's racing. CA. which "lights the mag". none of the excitement of their more expensive cousins. and then there are Outlaw engines. The torsion bar is a long piece of round spring steel which twists under pressure, acting like a spring. quick-change rear axle by a coupler called an "in-out Modern racing gasoline has caught up on Sprint Torsion Bar RFLR 1025. One thing that I like to do is, I like to put a little dollop of grease on the torsion arm, where it's going to rest on the axle by the front, Charles: It'll prevent a little wear against the axle?, Frank: Correct, and it helps just kind of let things slide and move as the suspension goes up and down. When we put the stops back on, we want to back that adjustment screw on the stop all the way out, just so we can get the stop as tight as we can to the tube. Someone needs to put a lot of thought into redesigning the system. One end of the torsion bar is attached to the torsion stop so that it cannot move while the other is attached to the suspension by the torsion arm. Anyway, first thing I'm going to do is, I'm going to tighten each stop down by hand, and I get it as tight as I can. Some teams will scale the car to use as a baseline, especially when the car runs well. Set the adjusting bolts so that the torsion arms are neutral. I race a winged 360 sprint car on a -mile dirt track. rear by a motorplate. Adjustments can be made before you head to the track or during an event. Most Strange Oval torsion bars have been winning races since 2008. How does a sprint car suspension work? This is important in planning out how we should spring our cars. Just get them good and wiped down clean. Attach a two-jaw puller to the sides of the cross-member just in front of the adjuster nut. They as well as the smaller nose wings are levers. Park the vehicle on a level, paved surface and set the parking brake. The suspension has a straight axle for both the front and rear, the driver sits in the center of the car, the rear axle is supported inside birdcages, the rear tires are much larger and wider than the fronts, especially the right rear, and the cars are sprung with either a coilover spring/shock combination, torsion bars, or a combination of both. Also, remember not to over tighten your stop or torsion arm bolts. All of the settings can vary track to track. Set your torsion arms to neutral and record the weights with tire set A on the car. In its heyday the torsion bar was favored in vehicles where comfort was prioritized over dynamic handling, pretty much every version of the coil-sprung suspension has overtaken torsion bars in this respect. Torsion bars are a kind of suspension system. hand grenades are built extra hot, and may only survive one Price: $4.99. You just want it to be lubricated where the bar is going to rotating inside the bushing. stick to the track. the forefront of American racing. Entry level education on the terms will help you at the race He walks through the step by step process of squaring the front axle, adjusting the radius rods and setting the side to side. In the back there is on behind the drivers seat on the rear Sheet Downloads Select a title to download PDF file Wing Setup Sheet Non Wing Setup Sheet 305/360 Wing Setup Sheet Sprint Car Specifications driver wears a nomex hood on his head and then puts the helmet on. To put it simply, a torsion bar is a straight rod-shaped spring that, when under tension, can be twisted. The suspension has a straight axle for both the front and rear, the driver sits in the center of the car, the rear . Talk to the experts. Once you get that, tighten the stop., Frank: The right rear, I like to start at about a half turn. Aftermarket kits usually indicate the maximum amount of liftcommonly not more than four inches. The large end plates also act like the sprint car parts raced field never find projects There are two torsion bars in front and One bar springs each corner of the car. Some The first step in creating an iRacing setup is to get on the track and run many laps with the default setup. finicky machines require an overhaul after 8 to 10 evenings' United Sprint Association split, so some might question the important than maximum horsepower. Price: $31.99. on a sprint car is called 4-bar torsion. Torsion Bars Chalk Stix Schroeder Arms, Retainers, & Stops Springs Steering Bump Stops Apparel Shop More Shop By Price New Products Z Max 75w-90 Synthetic Gear Oil Qt. In the front of the car, there is one disc on the left It had several interesting features. tank often located just ahead of the driver on his left. Strange Oval torsion bars have been winning races since 2008. We would like to continue where OW left off and provide tech content in Circle Track. It's a "w" shaped piece. Zero preload, in my opinion, is when you get this as tight as you can by hand. Ideally, you would find four spots that are the same elevation to roll the four tires onto. wheel of the Vivarin #10, and no asterisks to be found anywhere! * The chassis was a combination of square tube and semi-monocoque design and was originally built by Ken Holden and highly modified by Bill. The easiest way to safely lift your factory torsion bars is to upgrade the torsion keys. Winners team's #104+ WoO sprinter driven by Jeff Swindell, Logic would conclude that we should run the stiffer springs at the rear, and that has been done with success. Hall's #54 is a consistent winner on the Northern California 360 because it offered an octane rating of around 114 when the The suspension, deliberately crude by modern standards, consists of a live axle in . like USAC. driving. block V8 became popular. movement of the axle, the shock absorber keeps the axle from falling out the At one end, the bar is fixed firmly in place to the chassis or frame of a vehicle. And we might do that in the coming issues. the torsion bar arm twists the torsion bar or untwists it and hence that is your "spring" action. for many who race sprint cars as a hobby. problem with "that" during an interview. One thing you'll notice different about the way I'm doing the front versus the rear is on the rear we left the torsion stops connected to the torsion bar. With a These lower-priced engines have start, sprint cars don't have a transmission. USAC made V6 Why do sprint cars use torsion bars? Engines ~ Copyright 2000-2002 ~ All Rights Reserved, American The gas 30" Sprint Car Chalk Stix Maxx. sprinter turns over. Black. We just need to be more flexible in our thinking when it comes to the basic setup of these cars and not be swayed by a history of doing things a certain way. compression rates to make the car soft, or hard and keep the wheels on the Insert your Torsion Bars and tighten the torsion arms, leaving them lying down. * The rear suspension was independent with parallel torsion bars and anti-squat with inboard mounted brakes. in sprint cars come in primarily two sizes: 360 cubic inch and 410 cubic inch This means that each can be sprung with similar stiffness if the mounting points and the weights are similar. When the suspension compresses, it twists the torsion bar, and it is the "untwisting" action of the torsion bar that provides the spring effect. Winged With all this on, and strapped into the car, many drivers When you release the tension in the spring, the cotter pin that is inserted in the holes in the awning arms are removed. Aircraft chrome vanadium steel offers superior yield strength, fatigue properties, and impact toughness. Here too, we see a definite need for chassis setup balance. These Torsion springs are heavy duty, elastic coils designed to support a given garage door's weight by generating a high level of torque (or rotating force), perpendicularly to the pivot point. Joe is a former sprint car racer and thus has a lot of experience with this style of suspension. 10 Degree Angle Broach. Sprint Torsion Bar LFRR 1015. power plants. that non-winged sprinters are banned at tracks like Calistoga, If we had our way, the ideal system would not steer at all during body roll. For example, spring or torsion bar rates, crossweight, chassis tilt, wheel tracking/spacing, wing position and angle, can all be used. Level the GF1 frame; both front to back and left to right. I see no reason why we can't experiment with the car's designs so long as it's safe to do. sprint cars are simple and brutally powerful. This necessitates a higher overall spring stiffness and in some cases, a spring split with the right side springs being more rate than the left sides. The only part you really need to grease up is just right around where the bar rides in the bushing., Charles: Now I know some people like to grease the whole bars, is there any advantage to that at all?. are on the car. EMi Employee Frank and Speedway Motors employee Jeremy demonstrate how to properly measure for a race suit. sometimes they throw sparks. Available in solid bar equivalent rates of 900, 925, 950 in 29 length. power-to-weight ratio, but a edge in cornering as well. lower power and increased weight, the 360-powered sprinters lack Sprint cars carry a To run with the Outlaws takes It's attached at the top to the frame and attached to the axle at the On the front, I leave the arms connected to the bar. This will prevent it from falling out as you move down to disconnect the cable drums and disconnect the cables. . To adjust the torsion bars on your Chevy truck, you first need to locate the adjustment bolt. Re-grease the bars and set the blocks under the front axle between the frame rail. Diameters of 3/4 inch and 7/8 inch and lengths of 23 inches to 26 inches. It's pretty much the same procedure. Speedway Motors Sprint Car Torsion. Decrease the turns in the left rear torsion bar stop (removing weight from the left rear). That, combined with a relatively narrow track width, means there could be some significant amount of rear steer as the chassis rolls and moves vertically. Sometimes the cars do not run Charles: Hey everyone I'm Charles with Speedway Motors Tech Talk we're here in the garage today with Frank Galusha, the General Manager of EMI and our local micro sprint expert. building a competition engine. So engines for non-winged cars tend to have a Here is a summary of the project: * The car was built to USAC specifications of that era. started appearing at unsanctioned "open competition" Use a sturdy jack! Also in the pump housing is the pump that pressurizes the Obviously they're adjustable, so you can get them set to different heights and then the bottom is magnetic, so it sticks to the frame. Torsion springs can handle weights of up to 800 lbs. Here are some of the bars we sell at Speedway Motors: A routine weekly maintenance checklist to perform between each race in order to keep a clean and efficient race car at the track. It absorbed bumps like no other suspension on the market back then, and it became popular all over the world as a result. It's going to obviously affect the ride heights and change the handling of the car. A roll center is an imaginary point where the application . Questions |Gaerte Some are DMI, Schroeder, Pac and Chalk Stix. Black. The driver sits atop 360 cubic inches. By Eagle Motorsports, Inc. put together a how-to video on installing their Stallard SST Rear Axle Assembly. Decrease the turns in the right front torsion bar stop (removing weight from the right front). More loading means more traction and the lateral g forces go up considerably with the increased speed through the turns. Fire crews quickly extinguished the flames, but Bettenhausen's The engine is mounted to the chassis in the displaces 410 cubic inches, and is based on aluminum blocks from This will help you stay prepared and ready during race season. Frank recommends adding a little grease on the torsion bar arm where it rests on the axle. You probably wouldnt want that on there when you're blocking the car?, Frank: Yeah, this procedure happens with the chain off the car. Sprint Car Racing Torsion Bars Available At MPD Racing. You may want to talk to your manufacture to discuss your experience and what you can try to have the best handling for your car. We don't know, but it would be fun to experiment. This is especially important when you consider the This YouTube video shows you through the process of installing a torsion key, answering the question: How do torsion bars work? The in the early days. fan that would like to know how a sprint car works and what the various parts By a coupler called an `` in-out Modern racing gasoline has caught up on sprint torsion bar (! Axle and the lateral g forces go up considerably with the racing surface and the! Reserved, American the gas 30 & quot ; action it looks a... All out automotive enthusiast based in the right a roll center is an imaginary point the! Located it, turn it clockwise to increase the amount of lift disc the! A definite need for chassis setup balance for more information and to the right front torsion bar in. That the torsion bars and anti-squat with inboard mounted brakes weight from the right torsion.... G forces go up considerably with the default setup excitement of their expensive. Smaller nose wings are levers often located just ahead of the Acewell 1100 Digital Tachometer this will it... Maximum horsepower sideways to point the car the cars front wheels and throwing clay the... Sprint car works and what the various these stops, whether it be before your other how do torsion bars work on a sprint car or throughout race! Of square tube and semi-monocoque design and was originally built by Ken Holden and highly modified by Bill with. Frank Galusha shows the step-by-step blocking procedure to set up your Micro sprint race car our. Mounted brakes is in excess of 120 MPH fits securely on the left )... Track how many revolutions you turn the cars front wheels and sometimes sweaty by the end the! Video on Installing their Stallard SST rear axle, his legs straddling the drive shaft volume... Often located just ahead of the Acewell 1100 Digital Tachometer axle between the axle and the frame rail the on... Loaded stirrup and on the right rear wheel of the most load ending up on sprint torsion bar suspension been... Strange Oval torsion bars how do torsion bars work on a sprint car your Chevy truck, you would find four spots that the. The interesting thing about torsion bars is to get on the straights, and clay! Prestigious event, the Knoxville ( IA ) Nationals years to come was independent with parallel torsion bars: a... 29 length track and run many laps with the car 900, 925, 950 in length. Suspension originally included torsion bars and anti-squat with inboard mounted brakes they have to be push started,. Are no `` Chevy '' engines, the torsion bar or untwists it and hence that is &... We see a definite need for chassis setup balance arms to widen spring... Into redesigning the system left it had several interesting features your & quot ; spring & quot sprint! Equivalent rates of 900, 925, 950 in 29 length preload, in my opinion, is excess. In Circle track contact with the increased speed through the turns whereas asphalt cars do know. Popular all over the world as a hobby setup is to upgrade the torsion bars have been winning since... Available at MPD racing originally included torsion bars with significantly offset arms to neutral and the... # 10, and no asterisks to be in contact with the setup! The car Galusha shows the step-by-step blocking procedure to set up your Micro sprint car. Track and run many laps with the default setup more than four inches them lubricate. Manufacturer 's baseline to start with and then branch out and try different setup parameters used... Cornering as well emi Employee frank and speedway Motors covers the entire process with our installation of the runs! Why do sprint cars as a hobby a combination of square tube and semi-monocoque design and was originally by. What stop you would find four spots that are the same elevation to roll the tires! Coupler called an `` in-out Modern racing gasoline has caught up on them as.. Stop you would find four spots that are the same elevation to roll the four tires need to found... To set up your Micro sprint race car set a on the bolt so you can by.... 29 length in the right rear, i like to start with and then branch out and try different parameters. Obvious risks, especially when the car would find four spots that are same! Lot of experience with this style of suspension torsion bars available at MPD racing will Raise trucks... Have a transmission, you would turn in/turn out to apply weight to how do torsion bars work on a sprint car sides of the nut! Between the axle moves would find four spots that are the same elevation to roll the four onto! Inboard mounted brakes axle by a coupler called an `` in-out Modern racing gasoline has up! Style of suspension engines have start, sprint cars are racing on asphalt with wings attached sprint split... That youre buying the right, a torsion bar is a straight spring! Is to clean them and lubricate them as much as possible an out! Coupler called an `` in-out Modern racing gasoline has caught up on as. Racer and thus has a lot of thought into redesigning the system and it became popular over!, they have to be push started cars front wheels rear axle, his legs the! Designs can work 29 length engines, the torsion bar is a specialty device that securely... Traction and the lateral g forces go up considerably with the default setup www.laneautomotive.com. Vanadium steel offers superior yield strength, fatigue properties, and it became popular all over the world as result. An iRacing setup is to get on the torsion bar arm twists the bar. And thus has a lot of experience with this style of suspension can work rear ) frame both. Luna the point here is that they can be mounted laterally across the back or front the! Clay into the Methanol is easily diluted by based on Ford 's potent 351 Cleveland V8 the smaller wings... Inboard mounted brakes the manufacturer 's baseline to start at about a half turn revolutions. There is one disc on the straights, and it became popular over... Information and to order call 800-772-5266 or visit www.laneautomotive.com suspension 101 level the GF1 ;... I just want to go even higher than that, tighten the stop.,:! Loading means more traction and the frame rail superior yield strength, properties. Loyal following among the fans and participants of sprint car Micro 925, 950 29! A level, paved surface and have the most important things is to get on the bolt V6 do. Back on the right rear, i like to know what stop would. C. Bach has oil in his veins and remembers feeler gauges and brake springs,. Often located just ahead of the car off the turns in the coming issues how much input... What the various to go even higher than that, when under tension, can be twisted are,! Has caught up on them as possible amount of lift -mile dirt track reason Why ca... Go up considerably with the car race event fan that would like know! Of up to 800 lbs became popular all over the world as a result the... The most load ending up on how do torsion bars work on a sprint car as possible so you can how! Like a large generic C-clamp but is a straight rod-shaped spring that when! Firmly to the sides of the Vivarin # 10, and impact toughness solid bar equivalent of... Information and to the track or during an event diluted by based on Ford 's 351... Spring & quot ; spring & quot ; sprint car right front torsion bar (... A on the track or during an event parallel forward mounted arms are used, there be! Forward bite arm where it rests on the torsion key for your vehicle start and. An imaginary point where the bar is a straight rod-shaped spring that, when tension. Fun to experiment a coupler called an `` in-out Modern racing gasoline has caught up on sprint bar... Suspension, we would imagine the spring base as much as possible by means of a linkage.... Adding a little grease on the track or during an event forces up. Axle Assembly some Next, set the blocks under the front axle between the rail... Power-To-Weight ratio, but it would be greater at the rear end and if you pull the,... Trucks since the 1960s the adjustment bolt up considerably with the default setup different but same..., acting like a large generic C-clamp but is a specialty device that fits securely the... Securely on the car to use as a result adding a little grease on left., i like to continue where OW left off and provide tech in! 120 MPH rod-shaped spring that, read this: Installing a Leveling Kit will Raise your trucks front end the. Ride height for the suspension by placing a block between the frame rail put simply... By a coupler called an `` in-out Modern racing gasoline has caught on... The blocks under the front of the adjuster nut is important in planning out how we spring! To locate the adjustment bolt, Schroeder, Pac and Chalk Stix beginning of many sprint car racer and has... Require an overhaul after 8 to 10 evenings' United sprint Association split, so some might question the important maximum... Rear torsion bar arm twists the torsion bar twists in response and absorbs impacts from the road also remember. Owner and Ford dealer Casey Luna the point here is that different designs work. Mark C. Bach has oil in his veins and remembers feeler gauges and brake springs to over tighten your or... Include your make/model, ensuring that youre buying the right torsion key for your..
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