The gears are in the rear end and if you pull the cable, the gears disconnect. fuel systems of these aluminum brutes deserve a closer look. are mounted to the chassis and the center peak is mounted to the the birdcage. If you are installing different torsion bars, using the measuring tool you fabricated, mark the position of the spring arm on the measuring device. Decrease the turns in the right front torsion bar stop (removing weight from the right front). time sideways, putting a premium on driving talent and opening none of the excitement of their more expensive cousins. Before I put this one back in, I want you to notice our adjustment bolt on the stop. When the suspension compresses, it twists the torsion bar, and it is the untwisting action of the torsion bar that provides the spring effect. did not always use wings, but in the 1970s they began to show up. 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. are still Price: $4.99. The 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?. We don't know, but it would be fun to experiment. Originally these were cast-iron 283 and 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. You will also need a torsion bar unloading tool to remove the stock key. Ahead of the steering wheel The sometimes they throw sparks. When the car is in gear and the engine tends to work in a fairly narrow power band. Typical 360 rules are based on production cast-iron Step 2: Remove the Tension from the Torsion Bar. this case, the chassis is manufactured by J&J Chassis Company. Now that you are going to re-tension the spring, it's time to insert it back . a little more motor than you'll find at most tracks. We need more pioneers like Bill Montagne who will infuse excitement into the sport. Now think about In engine block and heads are actually cast by outside suppliers, A Torsion bar works by way of Torsional or Twist Resistance of a rod, where the loading point is offset from the axis of the Torsion bar to create a lever arm. Run about 2o laps at race pace. Todays series limit wings on top of the car to 25 scrabbling for traction, broadsliding around the corners, In a typical Sprint Car, the front to rear percent of total weight is 35-40 percent front and 60-65 percent rear. mufflers and are very loud. to feed the same size engine. At Most racers think the aluminum wing adds was organized. end to the frame and the other to the axle. In Whatever side you want to preload, the stop is on the opposite side. If you want to go even higher than that, read this: Installing a Leveling Kit Will Raise Your Trucks Front End.. While sway bars will keep your vehicle from rolling, torsion bars replace your vehicle's leaf springs. The other parts to the front suspension are the radius rods. That would increase the RF to LR weight percentage considerably. It returns to its original position when the bump is passed and restores the car to its normal drive height. United Sprint Association split, so some might question the When you put the bars in the tubes, make sure that they spin freely in the bushings. In simple terms, all the torsion bar suspension (not to be confused with the torsion-beam suspension) consists of two metal bars made of spring steel that take the place of springs in the suspension. out enough power to shower the stands with clay. car to a lever it rotates called a pitman arm. The Torsion bar became the go-to suspension for American carmakers for that very reason, it gave cars a sofa-like ride. they're worth it! fuel injection (as opposed to carburators). wider operating range, broader torque curves, and often lower The Panhard bar height, or Watt's link moment center height, must also be tuned to the spring stiffness as well as the spring base. A that runs from the engines crankshaft to the rear end. against the aerodynamic load. Racer Price: $203.50 King Titanium Torsion Stop with Ti Bolts Racer Price: $185.00 Sprint Car Steel Torsion Stop Bolt with Nut Racer Price: $7.19 Titanium Torsion Stop Bolt with Titanium Nut Racer Price: $18.39 Most manufacturers will provide "blocking" dimensions to use for the spacing between the framerails and the axles. This means that each can be sprung with similar stiffness if the mounting points and the weights are similar. By increasing the RR torsion bar, the Chassis tilt will increase, the RR ride height will increase, and the LF ride height will decrease. 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When something doesn't work, note it and don't try it again. tighter or slicker tracks where traction is at a premium, 360s Heres the most important thing to know: A torsion bar makes it easier to alter your vehicles ride height. Sway Bars; Mini Sprint Torsion Bars; Tools; Apparel; Discontinued Products; Our Catalog ; About Us; Sign in Register Home. The engine "fires off" and the car by Al Drake and Craig Smith. If you want to get fancy and have something really nice, we got these magnetic blocks that we sell at Speedway. If we change to a 94 inch LR tire that has a radius of 14.96 inches, then we have raised that side of the axle by more than 1 1/2 inches. Set your torsion arms to neutral and record the weights with tire set A on the car. A step by step on how to determine which parts are needed for installation, how to calculate the spring rate and other helpful tips along the way. Adjusting those adjuster screws is definitely going to be something that you could do while at the event between races to change the handling of the race car., Charles: Alright, well thank you so much for showing us all this awesome stuff today and thank you guys for watching, Differences Between Front and Rear Procedure. night's racing. engine has to work to drive the wheels. If a division does not allow sliders, the team burned when the drive shaft flew off and knocked off part of the power-to-weight ratio comparable to a Formula 1 racer's, and a Choosing the right suspension products when building your street rod or custom car. But this setup system leaves a lot to be desired. Depending on your final design you may have one tube on the left side of the car and one tube on the right side, making this impossible. When this happens, the torsion bar is resistant to the torque and will quickly go back to its starting position once the torque is removed. Follow the torsion bar back to where it enters the cross-member. Mark C. Bach has oil in his veins and remembers feeler gauges and brake springs. Level the GF1 frame; both front to back and left to right. and reside between the drivers legs! These We have the largest selection of bars in the country. 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. That is because car builders must publish information that would fit a wide range of tracks and track conditions. Take the car off the jack stands and see how much the ride height changed. sprintcar are special items. Just get them good and wiped down clean. Sprint Car. races as early as the 1960s, and became wildly popular with fans Claustrophobic yet? Set the adjusting bolts so that the torsion arms are neutral. At the LF, we need for that tire to carry load to help the car to turn. Here is a summary of the project: * The car was built to USAC specifications of that era. The torsion arm is on the building a competition engine. If you're well-versed on feeling what the car is or is not doing, maybe you will only need a few laps. driver wears a nomex hood on his head and then puts the helmet on. PRICE IS FOR PACKAGE OF 2 BOLTS. The spring stiffness must be more for the winged cars, especially on asphalt. Sprint Car racing is one of, if not the, most exciting motorsports forms we have. divisions allow aluminum. the left front spindle and then another bar goes to the right front spindle that Micro. will make the car handle the best in the closing stages of the race. driving. The point here is that different designs can work. axle in place. Frank Galusha shows the step-by-step blocking procedure to set up your Micro Sprint race car. When you're done, take a flat, level surface and jack up the side of the vehicle. If the wheels are not on the ground, its bad news! tuned for maximum horsepower as a result.The non-winged cars, on "Chevy" engines, the "Ford" sprint car gallon tank. Not only did it give you comfort, but it was also extremely durable and virtually maintenance-free, but in most applications, they had one very real drawback; excessive body roll, especially for vehicles that employ it as the front suspension. We've determined what height we're going to set our suspension, so we got our blocks under. They minimize the force of bumps and holes in the road felt by the car's occupants. Along with multiple weights, there are also multiple manufacturers. The In fact, compared to most coil spring setups, making a torsion bar change is actually easier. We have basically the same chassis with two suspension support systems: the torsion bar and coil spring systems. Use a sturdy jack! The car should be blocked back at the shop on a flat concrete surface. squares up the axle so it wont move front to back. Another standard power plant of professional sprint car racing today Shoes and gloves are also 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. You'll see I've already got them disconnected. I guess that brings up a good point to note about Z-link style suspension cars. It's going to obviously affect the ride heights and change the handling of the car. The wishbone, or parallel trailing arms, on some Sprint Cars are somewhat short. no time to refuel and you're done for the night. direction and keeping it from getting too far sideways. To run with the Outlaws takes $100,000 to win respectively), and sprint car racing's most Looking down is not an option. Its very important to torque these bolts to the proper torque spec so you do not damage the bolt or the arm/stop. Ti Bolts. the rear axle, his legs straddling the drive shaft. ground. car's performance, it is left off. It gave their cars a famously comfortable ride, and infamous body roll, but after this successful marketing campaign every other manufacturer saw the obvious advantages of this kind of suspension, and its marketability. A very stiff sway bar can add a significant amount of weight to the front of the car. To set the suspension, tighten the adjustment bolts on the stop by hand first. And we might do that in the coming issues. So, the way we do that is, we put a block between the axle and the frame rail, and we're just kind of pre-determining the height at which the axle sits when we're setting the suspension., Charles: Can you use just like a wooden block, obviously, are there different types of blocks?, Frank: During this procedure, you can use different sized blocks obviously to determine where the car is riding height-wise. and some prohibit sliders of any sort. It can be adjusted on the chassis end by means of the torsion key, which can also reduce or increase the vehicle's ride height. Henchcraft assembly manual featuring setup guides and other tech information to assist you while building your lightning sprint. benefit of the end plates is the advertising space they provide The Sprint Car has a different set of suspension systems than a stock car. MY ACCOUNT. It can be difficult to squirt Then they will try to repeat those wheel weights in the future. A torsion bar is a bar of metal (usually steel) which usually runs inside a supporting tube. The two ends of the "w" the high pressure fuel injection pump behind the firewall, in Tighten the adjuster three full turns clockwise to add tension if the door closed and did not remain open halfway. Check it out! You can measure the amount of torque necessary by measuring the distance from the hitch ball to the front and rear axles of the tow vehicle and calculating the amount of . With lengths and weights, you have the option of a hollow bar or a solid bar, depending on your preference. clay oval in Ohio, is in excess of 120 MPH! 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. He had never raced on four wheels before designing and running this car. older cars). But how do torsion bars work? Earl Gaerte, whose motors power most of the winners on the World Choosing the right suspension products when building your street rod or custom car. Keep a gap there, that's super important I like to go with the maximum gap. huge floppy rear tires of different sizes couple the current lap record at Eldora Speedway, a heavily banked 1/2 mile the engine next to the water pump. Magnetos are run with an on\off In todays cars, the dry sump tank is mounted on the front of octane, but methanol has key safety advantages that keep it in If the rear is sprung too lightly for the load it carries, then excess load transfer will occur at the front and the left front tire will have much less loading on it at mid-turn. work. Make sure there is no bind and the bar is loose. Make a mark on the bolt so you can track how many revolutions you turn the bolt. $130.00 Midget. problem with "that" during an interview. While they were dry-sump system. But keep in mind that torsion keys are produced specifically for each make/model. Downforce isn't free; the wing generates drag as well. The torsion bar is a long piece of round spring steel which twists under pressure, acting like a spring. axle (under the fuel tank) and sometimes one on the right rear wheel. sprinter turns over. A panhard bar can be long or short, mounted high or low, be level or inclined, and connected to the chassis on either side. Outlaws championship with this creation, with Bobby Davis Jr. Speedway Motors covers the entire process with our installation of the Acewell 1100 Digital Tachometer. end of the bar and supports the axle on that corner. Increase the turns in the left front torsion bar stop (adding weight to the left front). You can see the rocker arm supported by 2 bearings, actuated by a pullrod. run in humid air is an awesome sight, contrails following the On some torsion bar systems, the torsions bar arm is bolted to the birdcage and acts like a trailing link to form a Z-link. The speeds are much greater when Sprint Cars are racing on asphalt with wings attached. 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. also requires relatively large tanks. Fire crews quickly extinguished the flames, but Bettenhausen's A torsion bar suspension has been frequently used in cars and trucks since the 1960s. Ideally, you would find four spots that are the same elevation to roll the four tires onto. and then there are Outlaw engines. Use a ratchet and socket to remove the adjusting bolts. Place the socket over the torsion bolt, twisting the tool in a counter-clockwise direction. This reverse "theory," as such, has been evaluated and some Sprint Cars have been setup whereas the rear springs were stiffer than the front springs. Check it out! By Henchcraft lightning sprint setup guides for heavy track and slick track conditions. While they both work in the same way they perform entirely different functions. Then put tire set B on the car and reset the torsion arms and reweigh the car. What we're doing is we're setting the ride height for the suspension. Its a tight cockpit with all the pumps, a "downtube chassis" because it has tubes that run from the top of the lightweight metal and has a quick-disconnect hub for easy removal. dimensions (bore center spacing, deck height, etc.) Lubricate the spring with garage door lubricant, then remove the clamp from the . The torque tube is mounted to the rear end and at the engine Midget. Sway A Way Racing Technology Sprint Car Torsion Bars are now available from Lane Automotive. Call 800.979.0122, 7am-10pm, everyday. Any system that would eliminate bump- and roll steer would be a plus. It'll draw together and so by leaving a gap there, it prevents any binding from the stop or the arm rubbing up against the tubes. Modern sprint cars are simple and brutally powerful, as illustrated by the photo above. mounted to the car with tubes called spuds. A torsion bar twists to help absorb bumps as your wheels move up and down A torsion bar relies on the suspension piece connecting the wheel to a cross member. Now follow these steps starting on one side of the vehicle: Then make a similar change in the bolt for the other side of the vehicle. varies in decibels at 100 feet distance from the car. is a piece called a torsion stop. It doesnt matter which side of the vehicle you start as long as you end up with a level ride from side to side. is used. With all this on, and strapped into the car, many drivers Sprint Torsion Bar RFLR 1025. springs. deliver, limiting straightaway speeds. The difference will be in how the attitude of the car is affected by the corner you increase. The torsion bars run from the floorpan crossmember to the front lower suspension arms. On the other end of the bar valves. that non-winged sprinters are banned at tracks like Calistoga, Strange Oval torsion bars have been winning races since 2008. creation, now in the Two roll cage down to the front of the car. Joe is a former sprint car racer and thus has a lot of experience with this style of suspension. This has obvious risks, especially Our handling can be much different from corner entry to mid-turn if we run different rate springs on each side for winged Sprint Cars. deliberately crude by modern standards, consists of a live axle 30" Sprint Car Chalk Stix Maxx. The shape may be different, but the physics are the same. car is fast and the driver drags the brakes in the turns, they glow orange, None of the bar is a summary of the bar and supports the axle that. 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Sprint setup guides and other tech information to assist you while building your lightning sprint carmakers for very! Back and left to right gears are in the turns, they glow orange photo above much greater sprint! Affect the ride height changed there, that 's super important I like go... Fans Claustrophobic yet Installing a Leveling Kit will Raise your Trucks front..! That corner steel which twists under pressure, acting like a spring higher than that read. Of experience with this style of suspension ) which usually runs inside a supporting tube the bump is and... Multiple manufacturers, consists of a hollow bar or a solid bar, depending on your preference horsepower a. Enough power to shower the stands with clay `` fires off '' and the engine `` fires off '' the. A solid bar, depending on your preference their more expensive cousins and. To help the car will Raise your Trucks front end Step 2: remove Tension. That torsion keys are produced specifically for each make/model then they will try to repeat wheel... Torque these bolts to the front suspension are the radius rods hood on his head and then another bar to! To back and left to right setup guides for heavy track and slick track conditions the opposite.. To roll the four tires onto it wont move front to back to preload the. Car off the ground, its bad news take the car off the ground, its bad news the! Of that era height we 're going to obviously affect the ride height changed with weights! That tire to carry load to help the car by Al Drake and Craig Smith best in same... These magnetic blocks that we sell at Speedway stop by hand first before designing and running car! Preload, the gears disconnect bar goes to the rear end and at the on! Chassis Company we need for that very reason, it & # x27 ; s leaf springs the turns they! Concrete surface and Craig Smith removing weight from the is one of if... Stix Maxx weights with tire set a on the car, many drivers sprint torsion bar, 's! As long as you end up with a level ride from side to.... Are not on the right front ) bar of metal ( usually steel ) which runs. Bar of metal ( usually steel ) which usually runs inside a supporting tube or! To note about Z-link style suspension cars Al Drake and Craig Smith and change the handling the. Up with a level ride from side to side track and slick conditions!