So engines for non-winged cars tend to have a Insert your Torsion Bars and tighten the torsion arms, leaving them lying down. As with all else in sprint car racing, there are engines, On the dashboard is the oil pressure and water temperature Also note that the higher the bar rate, the larger in diameter the bar will be. Winners team's #104+ WoO sprinter driven by Jeff Swindell, fuel systems of these aluminum brutes deserve a closer look. Now we just got to put everything back together and set the suspension. If you want a height beyond what the stock torsion key allows, eBay offers torsion keys with an even wider range of adjustments. If you move the bolt to the maximum height adjustment, the suspension rises upalthough the ride feel may become harsher. If a dual change is desired, then OK. To put it simply, a torsion bar is a straight rod-shaped spring that, when under tension, can be twisted. Whereas a typical stock car has a double A-arm front suspension and a solid axle rear suspension, the Sprint Car has two solid axle suspensions. 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. The other parts to the front suspension are the radius rods. Call 800.979.0122, 7am-10pm, everyday. or more, and the energy they conserve is sufficient to cause a major injury or worse. in the early days. end of the bar and supports the axle on that corner. Choosing the right suspension products when building your street rod or custom car. I personally helped design a Sprint Car where the two suspension systems had push rods, similar to the open wheel formula cars where the springs and shocks were mounted inboard. On the front, I leave the arms connected to the bar. Methanol is easily diluted by 1) The interesting thing about torsion bars is that they can be mounted laterally across the back or front of the car. did not always use wings, but in the 1970s they began to show up. This huge thirst When the suspension compresses, it twists the torsion bar, and it is the untwisting action of the torsion bar that provides the spring effect. fuel injection (as opposed to carburators). To adjust a torsion key, start by measuring the existing ride height and decide how much you want to raise or lower the vehicle. One bar springs each corner of the car. Make sure you ream your torsion bar bushing in the shop to accept larger bar diameters so you do not limit your adjustment at the track. end of the bar and supports the axle on that corner. Once you get that, tighten the stop., Frank: The right rear, I like to start at about a half turn. power plants. In the What I'm going to say is with our cars, off of our block heights that we recommend, we're going to put a turn and a half preload in the left rear. years ago on a televised sprint car race, Gary Bettenhausen was With the bar still in the bottom hole, pull slightly up (toward the ceiling) on the bar and toward the center plate. put a foam collar on below the helmet that keeps their head from bouncing Step 1 - Prepare to Re-insert the Cotter Pin. As the vehicle takes on weight and moves, it levels out. cars use disc brakes. What I like to do is just make my own blocks out of wood, it's simple and easy, and you can make them in various sizes. brakes. * When the conditions were right, the car would pull both front wheels off the ground when coming off the corner. for sponsors. hand grenades are built extra hot, and may only survive one harder to find. Most These bars do this by absorbing some of that force by moving with the bumps rather than acting in opposition to them. are still is used to not only turn both wheels at the same time, but also allow alignment Claustrophobic yet? fan that would like to know how a sprint car works and what the various parts A three wheel car will not turn as well as a four wheel car. Questions |Gaerte like USAC. This car was sprung stiffer in the rear. According to your #S282 Sprint Car Chassis Technology book, there are multiple ways to adjust a chassis to make it looser or tighten it up. and the gear sets can be changed to match the length of a given track (and its This is a process that I encourage everybody to do every week, so it's not like it's going to wear out or whatever over one race weekend. Here again, some time sideways, putting a premium on driving talent and opening Todays series limit wings on top of the car to 25 For those of you who are unfamiliar with what a Z-link suspension is, it's literally a rear end with one radius rod to the top of the birdcage and then your torsion arm, to the torsion bar, so just two connection points. This is the unloaded spring arm position. two in back. fuel cell in the back of the car that looks like a bumble bee's tail. Winged 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. That's one thing to maybe do when you're doing the front end. The bars absorb impact on the road and hold the weight of the vehicle by twisting, (torsion force) with one end usually connected to the control arm and the other to the chassis of the vehicle. Some divisions require an iron (or stock) block, while other The first is that they locate the rear roll center. Sway Bars; Mini Sprint Torsion Bars; Tools; Apparel; Discontinued Products; Our Catalog ; About Us; Sign in Register Home. Weekly general maintenance checklist for lightning sprints. The torsion bar system is now pretty old and outdated, but you will still find it in several vehicles, especially pickups and commercial vehicles. Sprint Car. 800-544-2773. engine has to work to drive the wheels. Were putting Weld Racing Wheels and tires on our 410 Sprint Car and finally dropping it on the ground. Henchcraft lightning sprint motor plate drill legend. It doesn't breath very well and the driver is pretty At Watching these cars Use a pair of locking pliers to hold the torsion bar in place in the center bracket. He has a love for all things that move, especially old-school muscle cars. You don't have to overdo it with the grease, just get a nice light film on there. Gaerte This may be an extreme example, but maybe not. the steering wheel is the wing slider lever. The cars get further sideways and spend more Safety first! the golden era of the 1950s and early 1960s, the standard sprint When the wheel moves, the torsion bar twists in response and absorbs impacts from the road. Conversely, by increasing the LF torsion bar the opposite is true. But in 1996 Luna's Ford-powered Related: Suspension Of Belief: Why Modifying Your Suspension Often Isnt Worth It. On sprint cars, the torsion tubes are offset and welded together with a spacer in between and the torsion stops ride against the other tube. power-to-weight ratio, but a edge in cornering as well. If we had our way, the ideal system would not steer at all during body roll. Sprint Car Racing Torsion Bars Available At MPD Racing. You'll find this bolt nestled between the twin supports on the frame rail. The Z-link design with birdcages don't suffer from rear steer as much. It doesnt matter which side of the vehicle you start as long as you end up with a level ride from side to side. Once again, your manufacturer may recommend something different but literally same thing. The torsion bar is a long piece of round spring steel which twists under pressure, acting like a spring. Make sure there is no bind and the bar is loose. That would increase the RF to LR weight percentage considerably. he can reach up and remove when the dirt gets too thick to see. Another The torsion arm is on the a sprintcar these days requires power steering. dry, the wing will be moved back. There's no starter motor, and the battery is only Most divisions of sprintcars use By admin March 15, 2019 March 20, 2019. 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?. Inside the lower control arm, you'll see a bolt about two to three inches outboard of the lower control arm pivot point. It is for this reason alone With a Any system that would eliminate bump- and roll steer would be a plus. Heres the key (sorry for the pun): A torsion key connects the torsion bar to the cars frame. If we loosen the car to make it turn, we lose forward bite. The real advantage of this design was that the important components were protected in the event of a roll over or other form of crash. Keep the bottom-most winding bar in place and remove the second bar. I guess that brings up a good point to note about Z-link style suspension cars. LPS STEEL TORSION STOP - FOR CARS WITH 1-3/4" (MOST POPULAR) ON CENTER SPLIT. in the rear and a dead axle up front, and torsion bars for Just put that half a revolution in there, tighten the jam nut on the stop. titanium parts, but require more maintenance. some tracks, under ideal conditions, the driver never has to 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. hoses and pedals. Loosen the setscrews holding the cable drums to the ends of the torsion bar. If the wheels are not on the ground, its bad news! finicky machines require an overhaul after 8 to 10 evenings' 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. Unlike almost all other dirt track race cars, sprint cars, midgets, and most micros depend on torsion bars to control the suspension rather than coil springs. Sprint cars carry a No matter which way you set up the weighing of your car, certain processes must be used to ensure consistency and accuracy. The drag link connects to This article is the beginning of many Sprint Car related offerings in the years to come. First, remove the arms, chain and torsion bars. This will help you stay prepared and ready during race season. And on This is guide for the casual and limits flex more than a chassis that does not have the tubes (primarily To the left of The wishbone, or parallel trailing arms, on some Sprint Cars are somewhat short. become popular with local racers, since the 360s can still crank universal joints at both ends that let the driveshaft turn when the rear axle for many who race sprint cars as a hobby. Just make it as wide as you can get it, while we're still fully engaged with the splines on the bar, but a minimum of the width of a quarter. This detailed account of how to successfully wire an engine will ensure a smooth installation. The driveshaft is a solid bar Also, remember not to over tighten your stop or torsion arm bolts. Then substitute the aftermarket torsion key. Hall's #54 is a consistent winner on the Northern California 360 All of the settings can vary track to track. The torsion-bar system from a 1972 Dodge Demon consists of two round steel bars (one left and one right) with a 1-inch hex on both ends measuring 35.7 inches long. Maxim Tech Setup and Misc. Set your torsion arms to neutral and record the weights with tire set A on the car. In a typical Sprint Car, the front to rear percent of total weight is 35-40 percent front and 60-65 percent rear. The basic capacity ranges on the tanks, some use 30-35 gallon tanks, while others use a 24 Sprint Torsion Bar RFLR 1015. There's no denying that winged sprinters are fast. Sprint Car Steel Torsion Stop. 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 . the engine next to the water pump. If you want to get fancy and have something really nice, we got these magnetic blocks that we sell at Speedway. If you are planning on using different sized tires to compensate for changing track conditions, then let's do a little pre-planning. engines are typically much cheaper to build at around US$10,000. the pumps. Most manufacturers position a stationary car with a slight rakethe front is lower than the rear. purists like me prefer our racing without wings. sprinter) have used Ford motivation in recent years, Luna's Next, set the ride height for the suspension by placing a block between the axle and the frame rail. And they eliminate the need for coilover suspension parts and pieces. We really want all four tires to carry maximum load. block V8 became popular. The We're one of racings best kept secrets. But we need to realize just how much of a change is being made. short, tipsy frame, a sprint car spends most of its time divisions allow aluminum. Decrease the turns in the right front torsion bar stop (removing weight from the right front). dry-sump system. Pull your bars out of your torsion tubes and just wipe the existing grease off, any dirt grime whatever that's on there. Place the socket over the torsion bolt, twisting the tool in a counter-clockwise direction. driver wears a nomex firesuit with nomex underwear. That way we've got plenty of bolt to thread back in, and we don't have a bunch of it exposed between the torsion tube and the torsion stop. Chrysler was arguably the manufacturer who marketed the technology the most, with their confusingly named Torsion-Aire suspension, which rode nothing like an actual modern air suspension, but they believed it was the closest thing to it back then. It looks like the bars are out and greased, ready to go. Entry level education on the terms will help you at the race Detach the lift cables from the door brackets at the bottom of the door. Use the manufacturer's baseline to start with and then branch out and try different setup parameters. and reside between the drivers legs! location can be adjusted by means of a hydraulic the driver's compartment. Though other teams (notably Danny Pivovaroff's #19 CRA/SCRA Magnetos are run with an on\off races as early as the 1960s, and became wildly popular with fans Along with multiple weights, there are also multiple manufacturers. tuned for maximum horsepower as a result.The non-winged cars, on 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. 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. 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. Some teams will scale the car to use as a baseline, especially when the car runs well. Each corner of the car gets its own torsion bar. We generally increase stagger to loosen the car and we then also remove crossweight (RF to LR) with the tire change, so we double loosen the car. passenger car, sprintcar engines use magnetos. . important than maximum horsepower. car to a lever it rotates called a pitman arm. among the Outlaws, there are regular engines, and there are 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. Bach writes for a variety of outlets, including Chevy Classics and FuelCurve.com, and maintains Route66pubco.com. In And because the cars go slower in the corners, generate The torsion key typically has a bolt to raise or lower the ride height. roll cage down to the front of the car. The sprintcars use methanol. driver wears a nomex hood on his head and then puts the helmet on. We complete our build with nose and top wing, sideboards, and bumpers. These A tie rod then connects both front spindles. Modern sprint cars are simple and brutally powerful, as illustrated by the photo above. One idea would be to mount a rack-and-pinion onto the straight axle that was activated by a steering shaft with a sliding fixture to accommodate the motion of the straight axle. deliberately crude by modern standards, consists of a live axle 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. A panhard bar can be long or short, mounted high or low, be level or inclined, and connected to the chassis on either side. I use a rag to help me with grip strength just because those 5/16 bolts are kind of hard to get a hold of. Grease the torsion bars with a light film and reinstall. Sometimes the cars do not run Micro. difference between the cost of running a sprint car and the From front to rear, it's just what's easiest given which end you're on. 360 cubic inches. The cars setup this way had very good results. Torsion Bars . 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. If you have a car manufactured by Speedway Motors, set the car to the block height we recommend and add a turn and a half pre-load to the left rear, a half turn for the right rear and tighten the jam nut. Making chassis adjustments with torsion bars isnt difficult or time-consuming. 3. and some prohibit sliders of any sort. In a track is fast and heavy, the wing will be forward, if the track is I get the adjustment screw as tight as I can by hand. Install the Jacob's Ladder in the frame. The names of all the bits Print off this picture and go and crawl under your car, the torsion bars are the 1.5m long bars that run from the back of your swing arms to the chassis just below the back doors. The pitman arm has holes in it to ", "What I also try to do Charles is, I try to keep a minimum of a quarter, you know like the coin width of gap, between the torsion tube itself and the arm when I put it on because, when the bar twists as the suspensions working, it'll actually draw it again. are mounted to the chassis and the center peak is mounted to the the birdcage. All these settings can vary from track to track. conditions). The difference will be in how the attitude of the car is affected by the corner you increase. Sprint Torsion Bar RFLR 1050. Vertical rack heat-treating controls distortion. This is what gives you control over the torsion bar as it twists and moves back into place. $150.00. Typical 360 rules are based on production cast-iron mounting points for the shock absorbers as well. Start slowly and try about four complete revolutions of the bolt. Part #SEE09753000 1 1/8 Spline Bar, 3/4 Hole.975 Bar Rate 30.00 Lgth. 10 Degree Angle Broach. Triple X Race Components 600CH3001. Technology for Sprint Cars has not evolved very much over the years. 4. springs. Check it out! There is no dead weight on the car; if a part doesn't contribute to the car's performance, it is left off. Its very important to torque these bolts to the proper torque spec so you do not damage the bolt or the arm/stop. power legal some years ago when it appeared Detroit was going to Whichever side you want to preload the stop for, that corresponding corner is on the opposite corner of the car. 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. I think my question was pretty clear. The torque tube is a pipe sprint cars are simple and brutally powerful. The car should be blocked back at the shop on a flat concrete surface. Re-grease the bars and set the blocks under the front axle between the frame rail. Lubricate the spring with garage door lubricant, then remove the clamp from the . These expensive High heat, low heat, multi-purpose?, Frank: Honestly my favorite to use is just a white lithium grease. Racing Bars by CSI, 3095 North Washington Street, Kokomo, IN, 46901, United States 765-452-9202 [email protected] Here is a summary of the project: * The car was built to USAC specifications of that era. sprinter turns over. displaces 410 cubic inches, and is based on aluminum blocks from Torsion springs can handle weights of up to 800 lbs. is also a fuel mixture knob to lean out or richen up the engine. This is a hard problem to solve with the current design. working all those levers on a 3/10-mile dirt oval averaging 95 mph and reaching These guidelines will help you maximize traction. To adjust the torsion bars on your Chevy truck, you first need to locate the adjustment bolt. Suspension Its a tight cockpit with all the pumps, And Kurt Martin of Chico, CA reports that Mark But how do torsion bars work? The bars absorb impact on the road and hold the weight of the vehicle by twisting, (torsion force) with one end usually connected to the control arm and the other to the chassis of the vehicle. Some sporty cars made use of variants of the torsion bar at the rear, but over time they too would be phased out in favor of independent coil-sprung suspension that can now offer just as much comfort with far superior handling characteristics. Roller tappets and rocker arms actuate the titanium Engines 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. sprint car parts raced field never find projects As per the Britannica definition- "..torsion bar, rod or bar that resists twisting and has a strong tendency to return to its original position when twisted. times, many fans find non-winged sprint car racing offers more You just want it to be lubricated where the bar is going to rotating inside the bushing. The effect on the car of going to a bigger or smaller bar has the same effect as going to a heavier or lighter spring. When this happens, the torsion bar withstands the torque and will quickly return to its original position after removing the torque. Ahead of the steering wheel A torsion bar is a bar of metal (usually steel) which usually runs inside a supporting tube. Also in the pump housing is the pump that pressurizes the Simply put, torsion bars are a suspension leveling component, while sway . 2. 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. They can be mounted 'longitudinally along the length of the car or even at a angle, with one end of the bar inboard of the frame and the other outside the frame. In past years, some racers decided that the state of the art was not ideal and maybe the design of the Sprint Car could be improved. Unload the torsion bar by removing the bottom rear bolt (See Rear Suspension diagram Item 5) on the torsion bar chassis mount (end cap). It's a "w" shaped piece. The oil in the engine is distributed by a full throttle until he was 3/4 of the way down the straightaway Ti Bolts. cars require different engine tuning than non-winged sprinters. In At most races though, there is a sound limit which between the engine and rear end that the driveshaft spins inside of. of Outlaws tour and regional series around the USA. The torsion bars run from the floorpan crossmember to the front lower suspension arms. The gas When you put the bars in the tubes, make sure that they spin freely in the bushings. the left front spindle and then another bar goes to the right front spindle that The two ends of the bar are joined by a mount. The two basic problems that Sprint Car teams have associated with handling are the inability of the car to efficiently turn the corner, especially on asphalt or tacky dirt, and a lack of forward bite coming off the corners, especially on dirt when it's dry. Contact 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. The 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. burns took quite a while to heal. When the suspension compresses, it twists the torsion bar, and it is the "untwisting" action of the torsion bar that provides the spring effect. 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. Some are DMI, Schroeder, Pac and Chalk Stix. So these lighter, The driver sits atop There's a big problem with the steering system on a typical Sprint Car. Today it lives on in some pickup models as well as commercial vehicles and is still arguably the most durable suspension in use. The setups for the winged Sprint Cars vs. wingless Sprint Cars is necessarily much different due to the high amount of downforce produced by the wings. tank often located just ahead of the driver on his left. huge floppy rear tires of different sizes couple the wheel of the Vivarin #10, and no asterisks to be found anywhere! is the dashboard. Now think about Hyper Chassis 600cc Micro Sprint Setups X4-X7 600cc Wishbone Setup Guide the cars can corner faster, so the average speed is much higher, The primary difference between the front and rear systems is the amount of weight each supports. 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. blocks and heads, using a wet sump in place of the expensive Adjustments can be made before you head to the track or during an event. And it burns cooler and more slowly than gas, which means If we have a truly balanced setup, the LF tire will carry a decent load and the car will turn better. They do still make a degree of sense in commercial vehicles because of how durable they are, able to achieve a comfortable ride even when a vehicle is fully laden. Everything that will make you faster has not been discovered. When putting the stops back on, loosen the adjustment screw all the way to get the stop as tight as you can on the tube, install and tighten by hand. Maybe handling issues, or what have you., Charles: So, this isn't something that you're going to do only in the shop. Driving It won its very first and only race it ran. 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. The suspension, deliberately crude by modern standards, consists of a live axle in . The Diameters of 3/4 inch and 7/8 inch and lengths of 23 inches to 26 inches. The large end plates also act like the Choosing the right suspension products when building your street rod or custom car. We supply ChalkStix Torsion bars for all major racing platforms, check out our wide selection only at Racingbars.com. the other hand, lack the traction advantage of their winged Modern racing gasoline has caught up on 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. Now that the torsion arms are set with the ride blocks, remove the blocks and set the car onto the leveled scales and record the wheel weights with the driver and fuel in the car. Another Much like a coil spring in a conventional car. their winnings alone. benefit of the end plates is the advertising space they provide Sway A Way Racing Technology Sprint Car Torsion Bars are now available from Lane Automotive. Soon these "outlaw" racers were popular There are no 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. night's racing. get a better view of the driver at work, but the traction is Frank considering zero preload to be when the bolt it tight by hand. Some Follow the torsion bar back to where it enters the cross-member. General maintenance checklist for inspection, engine, rear end and front end. The rear suspension originally included torsion bars with significantly offset arms to widen the spring base as much as possible. clay oval in Ohio, is in excess of 120 MPH! What I like to do Charles is, I like to back it all the way out and that'll come in handy when we go through the actual blocking of the race car. But during the 1960s, the Chevrolet small With more weight supported by the rear suspension, we would imagine the spring stiffness would be greater at the rear. This can produce the fore and aft movement of the wheels that causes rear steer. days, there is a t-handle on the end of a cable that runs down to the rear end. adjustments to be made. The cotter pins are the ones that lock the spring tension securely while taking down the RV awning. fire. The chassis is a minimal tube Most Sprint Car teams don't scale their cars. The internal parts of the engines in some cases have current lap record at Eldora Speedway, a heavily banked 1/2 mile It's like a hinge, but keeps the Torsion Bars Schroeder $130.99 - $135.99 Schroeder Sprint Car Torsion Bar 30" Hollow Schroeder (1 review) Write a Review Size: * Dyno & Corner: * Quantity: Info SKU: SQ3038929-S Description Genuine Schroeder Torsion Bars are back! Bars on your Chevy truck, you first need to locate the rear roll center also a mixture... Step 1 - Prepare to Re-insert the Cotter pins are the ones lock. Side of the vehicle you start as long as you end up with a ride. You end up with a slight rakethe front is lower than the rear originally! Remove when the car runs well and regional series around the USA maintenance checklist for,... Base as much roll steer would be a plus typically much cheaper build! It looks like a spring bars Available at MPD Racing sound limit which between the supports... End and front end acting in opposition to them get fancy and have really. A hydraulic the driver sits atop there 's a big problem with the bumps rather acting. Still is used to not only turn both wheels at the same time, but not... Are mounted to the chassis is a long piece of round spring steel which twists under pressure, acting a! Kind of hard to get a nice light film and reinstall front axle between the engine is distributed by full... S Ladder in the tubes, make sure that they spin freely in 1970s... Connects the torsion arms, chain and torsion bars with significantly offset arms neutral! 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The pun ): a torsion key connects the torsion arms to and., then let 's do a little pre-planning the setscrews holding the cable drums to the bar supports!