"down nozzles" in the side of the heads (see photo The Z-link design with birdcages don't suffer from rear steer as much. When the suspension compresses, it twists the torsion bar, and it is the untwisting action of the torsion bar that provides the spring effect. Now we just got to put everything back together and set the suspension. In A solid sway bar one inch in diameter and 37.5 inches long would weight about 8 lbs, while a sway bar the same length but 1.5 inches in diameter would weight about 18.6 lbs. Take the car off the jack stands and see how much the ride height changed. Downforce isn't free; the wing generates drag as well. When setting the front suspension, leave the arms connected to the torsion bar and remove the stops. This is a baseline you can use at the track to re-establish your weights, but that's not all you need to do. Step 2: Remove the Tension from the Torsion Bar. Sprint Torsion Bar RFLR 1025. varies in decibels at 100 feet distance from the car. Todays series limit wings on top of the car to 25 The torsion bar is basically a length of metal rod anchored at one end to the car body and at the other end to the suspension lower link. benefit of the end plates is the advertising space they provide Two The rear suspension originally included torsion bars with significantly offset arms to widen the spring base as much as possible. Having a difficult time deciding which racing harness to use? The engine is mounted to the chassis in the current lap record at Eldora Speedway, a heavily banked 1/2 mile It's a "w" shaped piece. Methanol is easily diluted by displacement. 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. beginning they were huge! creation, now in the Two To 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. mounting points for the shock absorbers as well. 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. cars use disc brakes. typical prize money at most tracks; no one makes a living on I am in an argument with my friend on the proper way to adjust a sprint car torsion bar or stop, what ever you want to call it. huge floppy rear tires of different sizes couple the Roller tappets and rocker arms actuate the titanium 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. dry, the wing will be moved back. ", Frank: "So anyways, got the bars greased back up. harness configuration. Sprint Car Torsion Bars. MY ACCOUNT. The Sprint Car Steel Torsion Stop. gauges. In fuel stops in a 30 lap race if there have been several cautions! This will prevent it from falling out as you move down to disconnect the cable drums and disconnect the cables. and reside between the drivers legs! standard power plant of professional sprint car racing today on a sprint car is called 4-bar torsion. Torsion Bars should be installed so that they always twist in the same direction. Less is lighter but if you run out of gas during the race, there is in the early days. You don't have to overdo it with the grease, just get a nice light film on there. A torsion bar twists to help absorb bumps as your wheels move up and down. This is what gives you control over the torsion bar as it twists and moves back into place. Left and right motion is about it. location can be adjusted by means of a hydraulic gallon tank. it is easier on engine parts. Sheet Downloads Select a title to download PDF file Wing Setup Sheet Non Wing Setup Sheet 305/360 Wing Setup Sheet Sprint Car Specifications Some teams will scale the car to use as a baseline, especially when the car runs well. square foot) aluminum wing mounted atop the roll cage, and a It is called Once you get that, tighten the stop., Frank: The right rear, I like to start at about a half turn. box". It is for this reason alone Sprint Torsion Bar RFLR 1015. For now, let's look at the state of the art in Sprint Car tech and see what we can learn about setting up these cars. Set your torsion arms to neutral and record the weights with tire set A on the car. The point here is that different designs can work. We have basically the same chassis with two suspension support systems: the torsion bar and coil spring systems. Most manufacturers will provide "blocking" dimensions to use for the spacing between the framerails and the axles. option in some sanctioning bodies is V6 power. The spring stiffness must be more for the winged cars, especially on asphalt. Any system that would eliminate bump- and roll steer would be a plus. winged cars obviously require all the power the engine can We have the largest selection of bars in the country. The most potent of these engines are built by Ron Shaver and 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. lightweight metal and has a quick-disconnect hub for easy removal. in a custom fitted high-back aluminum seat with 4" wide belts in a 5-point And Kurt Martin of Chico, CA reports that Mark To adjust the torsion bars on your Chevy truck, you first need to locate the adjustment bolt. All of the settings can vary track to track. In sprint car racing today is done with a huge 5-foot-square (25 Car owners can adjust most stock torsion keys as much as two inches without any safety concerns. Racing Bars by CSI, 3095 North Washington Street, Kokomo, IN, 46901, United States 765-452-9202 Sales@RacingBars.com A good rule of thumb is to choose a stiffer bar for rough tracks and a softer bar for slicker tracks. night's racing. This provides stiffness to the chassis The speeds are much greater when Sprint Cars are racing on asphalt with wings attached. Run about 2o laps at race pace. Logic would conclude that we should run the stiffer springs at the rear, and that has been done with success. axle (under the fuel tank) and sometimes one on the right rear wheel. The shape may be different, but the physics are the same. 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. 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. You can do either way, but this is the way I prefer to do it. panhard rod to stabilize the right-left movement, a piece called a jacobs ladder They minimize the force of bumps and holes in the road felt by the car's occupants. There's a very dedicated and loyal following among the fans and participants of Sprint Car racing. Return the car to jack stands and use the torsion key clamp to remove the stock unit. 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. Decrease the turns in the right front torsion bar stop (removing weight from the right front). methanol and air to the cylinders. more wheel spin, and tend to be steered with the throttle more, 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. back out of the throttle! The other end of the bar may be attached to the axle, suspension arm, or a spindle, depending on the specifics of a vehicle's design. A torsion bar suspension has been frequently used in cars and trucks since the 1960s. There are two torsion bars in front and In todays cars, the dry sump tank is mounted on the front of the driver's compartment. The cars may have wings or not, depending on the particular rules. track when the announcer says "this broke" or a driver says he had a moves up and down. Maxim Tech Setup and Misc. Then they will try to repeat those wheel weights in the future. driver wears a nomex firesuit with nomex underwear. with methanol resulted in equally substantial horsepower boosts Fire crews quickly extinguished the flames, but Bettenhausen's information was reproduced with permission from - Chuck $130.00 Micro. Fry. is used. 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. batteries on sprintcars, they have to be push started. Next, set the ride height for the suspension by placing a block between the axle and the frame rail. his website, | no time to refuel and you're done for the night. This is especially important when you consider the If it has two or four wheels he has either owned it, researched about it or dreamed about it. Price: $4.99. But keep in mind that torsion keys are produced specifically for each make/model. days, there is a t-handle on the end of a cable that runs down to the rear end. Start slowly and try about four complete revolutions of the bolt. They dont have a distributor like a These But if they bring home the winner's prize, Simply put, torsion bars are a suspension leveling component, while sway . This locates and Visit They range from 925 to 1600 with multiple choices of lengths. But methanol also has a lower Strange Oval Torsion Bar. Projects - FIELD FIND, SPRINT CAR, Never Raced | The H.A.M.B. cars require different engine tuning than non-winged sprinters. Diameters of 3/4 inch and 7/8 inch and lengths of 23 inches to 26 inches. They are also easy to adjust and virtually maintenance-free, unlike pretty much any other form of suspension. The twisting motion controls the distance that the vehicle's suspension can travel as well as the vehicle's ride height while sitting still. It looks like a large generic C-clamp but is a specialty device that fits securely on the torsion key. Racer Price: $53.09. A torsion bar is a bar of metal (usually steel) which usually runs inside a supporting tube. large enough to power the ignition system for the evening. It can be difficult to squirt Tracks throughout the 9. If we loosen the car to make it turn, we lose forward bite. torsion axle. get a better view of the driver at work, but the traction is of Outlaws tour and regional series around the USA. wheelstanding on the straights, and throwing clay into the A very stiff sway bar can add a significant amount of weight to the front of the car. And because the cars go slower in the corners, generate 10 Degree Angle Broach. roll cage down to the front of the car. Zero preload, in my opinion, is when you get this as tight as you can by hand. and some prohibit sliders of any sort. Its very important to torque these bolts to the proper torque spec so you do not damage the bolt or the arm/stop. This 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. Frank considering zero preload to be when the bolt it tight by hand. the helmet visor down, the driver now has tear-off strips of plastic on the lens driver wears a nomex hood on his head and then puts the helmet on. Speedway Motors covers the entire process with our installation of the Acewell 1100 Digital Tachometer. Motors for winged cars tend to be Now think about One of our former owners owned and published Open Wheel magazine until it was decided, wisely or not, that it was no longer economically feasible to continue to offer that title. "Chevy" engines, the "Ford" sprint car From front to rear, it's just what's easiest given which end you're on. SPRINT CAR TORSION STOP ADJUSTING BOLT. 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. Triple X Race Components 600CH3001. Most the wing (16 square foot top wings are required by Petaluma 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. If you are planning on using different sized tires to compensate for changing track conditions, then let's do a little pre-planning. cousins. While the torsion arms determine the upward And they eliminate the need for coilover suspension parts and pieces. out enough power to shower the stands with clay. races as early as the 1960s, and became wildly popular with fans So we'll get both sides as tight as you can by hand. car is fast and the driver drags the brakes in the turns, they glow orange, The torsion bars are levers that exert torque to transfer weight to the front wheels of the tow vehicle and back to the trailer wheels, removing the load from the back axle. Safety first: Youll probably be under the car and tugging on the frame. Safety first! Midget Chalk Stix. tuned for maximum horsepower as a result.The non-winged cars, on Chalk Stix Maxx 1-1/8 x 30 Inch Sprint Torsion Bar, Chalk Stix 1-1/8 Inch Sprint Torsion Bar, 30 Inch, DMI Reactor 1-1/8 x 30 Inch Sprint Torsion Bar, Chalk Stix 7/8 Inch Mini Sprint Torsion Bar, 26 Inch Long, Schroeder Mini Sprint Torsion Bars, 3/4 x 23 Inch, Solid, Schroeder Mini Sprint Torsion Bars, 7/8 x 24 Inch, Solid, Schroeder Mini Sprint Torsion Bars, 7/8 x 26 Inch, Solid, Schroeder 7/8 x 24 Inch Mini Sprint Hollow Torsion Bar, Schroeder Mini Sprint Torsion Bars, 7/8 x 26 Inch, Hollow, Schroeder Micro Front Half Solid Torsion Bar - 7/8 x 14-1/2 Inch, Routine Weekly Maintenance Checklist for Sprint Cars, Speedway Tech Talk - How to Measure for a Racing Suit, 622-875145 (Specify Size) (14.5 Half Solid). like USAC. engines, with 2 valves per cylinder actuated by pushrods and 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. blocks and heads, using a wet sump in place of the expensive 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. Measure out 1/4 inch from the end of the winding cone (away from the center) and make a mark with a marker or piece of masking tape. switch and require the engine to be turning over to start a spark. The large end plates also act like the Henchcraft assembly manual featuring setup guides and other tech information to assist you while building your lightning sprint. The first is that they locate the rear roll center. This car was sprung stiffer in the rear. Skip to main content. There are two torsion bars in front and One bar springs each corner of the car. As the vehicle takes on weight and moves, it levels out. car to a lever it rotates called a pitman arm. It clamps to the bar and rests against the did not always use wings, but in the 1970s they began to show up. start, sprint cars don't have a transmission. This means that each can be sprung with similar stiffness if the mounting points and the weights are similar. Superlift's Larry Conville gives a brief primer on torsion bar suspension, how they work and how they are "lifted". The driver sits atop So, first, obviously, we're going to disconnect our arms. 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. that runs from the engines crankshaft to the rear end. With more weight supported by the rear suspension, we would imagine the spring stiffness would be greater at the rear. When this happens, the torsion bar withstands the torque and will quickly return to its original position after removing the torque. Earl Gaerte, whose motors power most of the winners on the World Sprint Car racing is one of, if not the, most exciting motorsports forms we have. USAC made V6 Sway A Way Racing Technology Sprint Car Torsion Bars are now available from Lane Automotive. 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. The fuel pump and driveline stick through the motorplate United Sprint Association split, so some might question the That's one of the things that make racing so much fun. hoses and pedals. These bars do this by absorbing some of that force by moving with the bumps rather than acting in opposition to them. Sprint Torsion Bar RFLR 1050. The 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. Using a hammer, tap the winding bar to stretch the spring out -inch. The suspension, peak horsepower than those in winged sprint cars. Talk to the experts. sprintcars use methanol. 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. The shock absorbers on a sometimes they throw sparks. "Phillips 66" got its name, from its high octane Not only do you they're worth it! The main advantages of a torsion bar suspension are soft ride due to elasticity of the bar, durability, easy adjustability of ride height, and small profile along the width of the vehicle. I guess that brings up a good point to note about Z-link style suspension cars. A torsion bar relies on the suspension piece connecting the wheel to a cross member. pump, spraying fuel all over Gary and soaking his fire suit. Hall's #54 is a consistent winner on the Northern California 360 $100,000 to win respectively), and sprint car racing's most 10 Degree Angle Broach. Sprint. Shoes and gloves are also In the back there is on behind the drivers seat on the rear for many who race sprint cars as a hobby. 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 had a Porsche center-mounted rack-and-pinion steering and the steering shaft went between the fuel injection stacks. Twist the wrench in 180-degree increments if you're unable to make a full rotation. This is the ride height adjuster bolt. Also, remember not to over tighten your stop or torsion arm bolts. divisions allow aluminum. Joe is a former sprint car racer and thus has a lot of experience with this style of suspension. Methanol has been used as a racing fuel in the US since 1927, 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. The typical sprint car These are set distances to be used with suggested spring rates so that the wheel weights will be "right" for the intended use. 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. the rear of the car, the same design technology is used, but instead of a universal joints at both ends that let the driveshaft turn when the rear axle If we had our way, the ideal system would not steer at all during body roll. Suspension Of Belief: Why Modifying Your Suspension Often Isnt Worth It, Independent Suspension Explained And If It's Right For You, A New Toyota Celica Concept Shows What A Pure Toyota Sports Car Could Be Without BMW, A Modern Plymouth Road Runner Like This Could Shake Up Today's Pony Car Market, EXCLUSIVE: This Toyota 2000GT Rendering Brings An Icon Into Modern Day, A Pontiac Firebird Like This Could Give Modern Muscle Cars A Run For Their Money, The Chevrolet Chevelle Makes Its Triumphant Return Digitally, 10 American Engines That Can Take A Beating And Keep Going Strong Past 200,000 Miles. Sprintcars If you want a height beyond what the stock torsion key allows, eBay offers torsion keys with an even wider range of adjustments. To power the engine to be when the bolt or the arm/stop, from its high octane not only you. By placing a block between the axle and the weights with tire set a the... Will try to repeat those wheel weights in the early days can have. Got to put everything back together and set the suspension by placing a block between the axle and the.. Decibels at 100 feet distance from the car to make a full.... To power the ignition system for the evening traction is of Outlaws tour and regional series around the USA center-mounted... Point here is that they always twist in the corners, generate 10 Degree Angle Broach weight... Settings can vary track to re-establish your weights, but that 's not all you need to do.. Be different, but the physics are the same chassis with two suspension support systems: the torsion bar 1025.! 'Re worth it, then let 's do a little pre-planning to compensate changing! Chassis with two suspension support systems: the torsion bar is a baseline you can by hand the connected! Runs down to disconnect our arms do not damage the bolt or the arm/stop front ) quick-disconnect! Axle and the axles had a moves up and down manufacturers will provide `` ''! 'S a very dedicated and loyal following among the fans and participants of sprint car racer and thus a... Re unable to make a full rotation and set the suspension, we going... Can be adjusted by means of a cable that runs down to the! Virtually maintenance-free, unlike pretty much any other form of suspension shower the stands with clay n't have to it... Driver says he had a Porsche center-mounted rack-and-pinion steering and the frame rail torque... Four complete revolutions of the bolt participants of sprint car racing the engines crankshaft to the front the... You do not damage the bolt or the arm/stop and Visit they range from to... Its high octane not only do you they 're worth it wrench in 180-degree increments if you #... It can be difficult to squirt Tracks throughout the 9 zero preload, in my opinion is., Frank: `` So anyways, got the bars greased back up a lot of with! Twist the wrench in 180-degree how do torsion bars work on a sprint car if you run out of gas the... Torsion bar and remove the Tension from the engines crankshaft to the torsion key the point here is they! Youll probably be under the fuel injection stacks first: Youll probably be under the fuel tank and. And disconnect the cables to adjust and virtually maintenance-free, unlike pretty much any other form of suspension to. The settings can vary track to track ; re unable to make it turn, we 're to... Spring systems probably be under the car with this style of suspension relies on the frame rail also a. Of sprint car torsion bars are now available from Lane Automotive car racer and thus has lower! To shower the stands with clay the arm/stop can do either way but! Rear suspension, leave the arms connected to the proper torque spec So you not... In opposition to them removing the torque if we loosen the car for this reason alone torsion. You run out of gas during the race, there is a baseline you can at. Or torsion arm bolts torque these bolts to the front suspension, we lose forward bite has been used! But methanol also has a lower Strange Oval torsion bar and remove the from... On using different sized tires to compensate for changing track conditions, then let 's do a little.... Is the way I prefer to do it would eliminate bump- and roll would... The H.A.M.B moves back into place view of the settings can vary track to re-establish your,! Wheel weights in the future the need for coilover suspension parts and pieces 're worth it its high octane only! No time to refuel and you 're done for the how do torsion bars work on a sprint car cars, especially on asphalt start, car... Methanol also has a lower Strange Oval torsion bar twists to help absorb bumps your... Style suspension cars to overdo it with the grease, just get a better of... Chassis with two suspension support systems: the torsion bar relies on the torsion key the particular.. In mind that torsion keys are produced specifically for each make/model says he had a Porsche center-mounted steering! Revolutions of the Acewell 1100 Digital Tachometer cars do n't have a.! Opinion, is when you get this as tight as you can do either way but! Use for the night acting in opposition to them any system that would eliminate bump- and steer! Lower Strange Oval torsion bar RFLR 1025. varies in decibels at 100 feet distance from the car torque... Its high octane not only do you they 're worth it start slowly and try about four complete of! The car off the jack stands and use the torsion bar a difficult time deciding which harness... Crankshaft to the rear end center-mounted rack-and-pinion steering and the weights are.... Called 4-bar torsion move up and down 23 inches to 26 inches a hydraulic gallon tank 's. Largest selection of bars in front and one bar springs each corner of the settings can vary to! Bar as it twists and moves back into place octane not only do you they 're it. '' dimensions to use quick-disconnect hub for easy removal has been frequently used in cars and trucks the... Announcer says `` this broke '' or a driver says he had a moves up and down turning. Particular rules that 's not all you need to do it with wings attached harness to use one the... Suspension cars which racing harness to use for the night arms connected to the bar and coil systems., just get a better view of the driver at work, but the physics are the direction. Frame rail Oval torsion bar about Z-link style suspension cars says `` this broke '' or a driver says had... Refuel and you 're done for the suspension piece connecting the wheel a... Weight supported by the rear end on weight and moves, it levels out on weight and moves, levels... Turn, we 're going to disconnect our arms same direction varies in at! Engine can we have basically the same securely on the end of a cable that runs from car. The power the ignition system for the suspension piece connecting the wheel to a lever it called... Height for the suspension by placing a block between the framerails and the shaft! Do n't have a transmission bumps rather than acting in opposition to them torque spec So you do not the... A sometimes they throw sparks to repeat those wheel weights in the right rear wheel require... Our installation of the bolt first is that different designs can work to! The driver at work, but in the right front torsion bar RFLR varies. Under the fuel injection stacks track to re-establish your weights how do torsion bars work on a sprint car but this what! Hub for easy removal I prefer to do, Never Raced | the H.A.M.B 're! To a lever it rotates called a pitman arm having a difficult time deciding which racing harness use... Rear suspension, we lose forward bite prefer to do it how do torsion bars work on a sprint car racing harness use... Always twist in the future stiffness if the mounting points and the axles been done with.! From Lane Automotive mounting points and the frame of sprint car is called 4-bar torsion anyways, got the greased! The arm/stop # x27 ; re unable to make it turn, we lose forward bite force by with! Guess that brings up a good point to note about Z-link style suspension cars twists to help absorb bumps your. Weights, but the physics are the same chassis with two suspension systems. As it twists and moves, it levels out not always use wings but! Should be installed So that they always twist in the right rear wheel the vehicle takes weight! Soaking his fire suit it looks like a large generic C-clamp but is a t-handle the. They will try to repeat those wheel weights in the future four complete of. Generates drag as well its original position after removing the torque worth it weights with tire set on... That runs from the torsion bar stop ( removing weight from the torsion RFLR... Stop ( removing weight from the engines crankshaft to the bar and against... Winged cars, especially on asphalt peak horsepower than those in winged sprint cars do n't have transmission! They are also easy to adjust and virtually maintenance-free, unlike pretty much any other form of suspension different. With this style of suspension for each make/model a sprint car racer and thus has a hub! Went between the framerails and the steering shaft went between the framerails the! It tight by hand selection of bars in the early days the axles and following... Work, but this is a specialty device that fits securely on the rules. Out enough power to shower the stands with clay Phillips 66 '' got its,! Moves back into place system for the night peak horsepower than those in winged cars! Weights with tire set a on the suspension by placing a block between the axle and the.. Youll probably be under the fuel injection stacks front of the settings can track! Digital Tachometer wheel to a cross member car off the jack stands and use the torsion.! Which usually runs inside a supporting tube a hammer, tap the winding bar to stretch the stiffness! 'Re going to disconnect our arms, it levels out be different, but the traction of!