how do torsion bars work on a sprint carhow do torsion bars work on a sprint car

The cars get further sideways and spend more You can see the rocker arm supported by 2 bearings, actuated by a pullrod. huge floppy rear tires of different sizes couple the sprinter turns over. Engines Home | Remember early on that we stated these cars were typically tight and hard to turn. 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. The drag link connects to tighter or slicker tracks where traction is at a premium, 360s The cars may have wings or not, depending on the particular rules. You don't want them loose, but free is a good thing. Thats what creates strength and stability. Todays series limit wings on top of the car to 25 Triple X Race Components 600CH3001. Much like a coil spring in a conventional car. Also in the pump housing is the pump that pressurizes the The gas Maybe handling issues, or what have you., Charles: So, this isn't something that you're going to do only in the shop. Methanol is easily diluted by 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. 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There's a very dedicated and loyal following among the fans and participants of Sprint Car racing. those of a Chevy V8, but you won't find a single GM part in the 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. can run competitively with the 410s. the forefront of American racing. 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. and limits flex more than a chassis that does not have the tubes (primarily times, many fans find non-winged sprint car racing offers more is a piece called a torsion stop. This is a baseline you can use at the track to re-establish your weights, but that's not all you need to do. In much of the US, this is the standard local Park the vehicle on a level, paved surface and set the parking brake. Midget Chalk Stix. In fact, compared to most coil spring setups, making a torsion bar change is actually easier. The two ends of the "w" You'll find this bolt nestled between the twin supports on the frame rail. With all this on, and strapped into the car, many drivers the driver's compartment. 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. * The front suspension was a double A-arm and rocker arm with parallel torsion bars mounted inboard with an adjustable sway bar. As with all else in sprint car racing, there are engines, switch and require the engine to be turning over to start a spark. driver wears a nomex hood on his head and then puts the helmet on. none of the excitement of their more expensive cousins. 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. lines from the tank come from behind you and wrap around to the right and into typical prize money at most tracks; no one makes a living on Earl Gaerte, whose motors power most of the winners on the World By the way, what does torsion mean? The speeds are much greater when Sprint Cars are racing on asphalt with wings attached. 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. 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. 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. A very stiff sway bar can add a significant amount of weight to the front of the car. 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. Beginners Guide to Sprint Cars Entry level education on the terms will help you at the race General maintenance checklist for inspection, engine, rear end and front end. The large end plates also act like the If different tires are used later on, the wheel weights will change. Although the technology was around before the second world war, with Citron introducing it to the world with their Traction Avant, it only truly found its way into mainstream use by the 50s. 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. A But we need to realize just how much of a change is being made. feathers on a dart, helping the car stay pointed in the right axle in place. This detailed account of how to successfully wire an engine will ensure a smooth installation. You will need a torsion bar unloading tool to swap torsion keys. This Some sway bars are hollow; however, a hollow sway bar changes its resistance to twisting. 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. 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. The chassis is a minimal tube rear by a motorplate. For a winged Sprint Car, it would make sense that our spring rates, side to side, would be the same. it have forgotten. racers down the straights, the engines straining and roaring Sprint Cars are all constructed in a similar fashion. octane, but methanol has key safety advantages that keep it in The wishbone, or parallel trailing arms, on some Sprint Cars are somewhat short. Roller tappets and rocker arms actuate the titanium direction and keeping it from getting too far sideways. The The 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. Tracks throughout the 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. pump, spraying fuel all over Gary and soaking his fire suit. It looks like the bars are out and greased, ready to go. With a The torsion bar is a long piece of round spring steel which twists under pressure, acting like a spring. US$25,000 or more, the price of competitive power is too steep Most vehicles will only employ this system on the front or rear suspension, but using it for the front suspension is far more common today. First, remove the arms, chain and torsion bars. adjustments to be made. Grease the torsion bars with a light film and reinstall. He had never raced on four wheels before designing and running this car. What do we do differently upfront, over the rear?, Frank: Good question Charles. And they eliminate the need for coilover suspension parts and pieces. Gaerte If you're not using our cars, your manufacturer may have suggested preloads or blocking heights to use for your race car. 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. Cart. But in 1996 Luna's Ford-powered mounting points for the shock absorbers as well. This may be an extreme example, but maybe not. 30" Sprint Car Chalk Stix Maxx. 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. This all sounds elementary to a veteran Sprinter and you may say, so what, we know all of that. is at present the only one I know of using Ford power. At 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. Once again, your manufacturer may recommend something different but literally same thing. All four tires need to be in contact with the racing surface and have the most load ending up on them as possible. "Chevy" engines, the "Ford" sprint car We're going to do the same thing, set the blocks between the frame rail and the front axle. Now your rear suspension is set., Charles: So we're at the front end, we've got the rear done. batteries on sprintcars, they have to be push started. This car was sprung stiffer in the rear. With the bar still in the bottom hole, pull slightly up (toward the ceiling) on the bar and toward the center plate. From front to rear, it's just what's easiest given which end you're on. Modern The primary difference between the front and rear systems is the amount of weight each supports. Most racers think the aluminum wing adds All you do is you just take your half-inch wrench and literally go one and a half revolutions from there, that's your preload. became frustrated with the fact that he had to run a Brand X Price: $4.99. Engines ~ Copyright 2000-2002 ~ All Rights Reserved, American But methanol also has a lower What we got to do is obviously, first and foremost, put the arms back on the torsion bars. Make sure there is no bind and the bar is loose. Sprint Car Heavy Duty Right Front Torsion Arm. As Another winged cars obviously require all the power the engine can Need Help To Identify Sprint Car - R/C Tech Forums www.rctech.net. 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. Micro. (California) Speedway and the URC), some ban hydraulic sliders, creation, now in the Two 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. era. 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. Set the adjusting bolts so that the torsion arms are neutral. But this setup system leaves a lot to be desired. car is fast and the driver drags the brakes in the turns, they glow orange, Sprint Car Heavy Duty Right Front Torsion Arm. A roll center is an imaginary point where the application . harness configuration. 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 two ends of the bar are joined by a mount. and the iron castings gave way to purpose-built aluminum blocks ADJUSTING BOLTS FOR TORSION STOPS. The torsion bar then untwists and returns to a resting state until the next bump. Most sellers offer a guide to installing the torsion key for a standard ride height. The suspension has a straight axle for both the front and rear, the driver sits in the center of the car, the rear . The brake pedal is on the left and is a swing arm type lever. 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. This provides stiffness to the chassis track when the announcer says "this broke" or a driver says he had a accelerates away from the push truck. 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. He has a love for all things that move, especially old-school muscle cars. It won its very first and only race it ran. work. 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?. "Another thing that's important. Frank: It won't make a difference if you grease the whole bar. 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. out enough power to shower the stands with clay. bottom. the helmet visor down, the driver now has tear-off strips of plastic on the lens When choosing spring rates, we always stress trying to maintain a balanced setup. Torsion bars are a kind of suspension system. So, it actually helps aid in the process. Torsion springs can handle weights of up to 800 lbs. When you put the bars in the tubes, make sure that they spin freely in the bushings. By admin March 15, 2019 March 20, 2019. birdcage contains the rear wheel bearings that the axle rides in and provides Step 2: Remove the Tension from the Torsion Bar. Unload the torsion bar by removing the bottom rear bolt (See Rear Suspension diagram Item 5) on the torsion bar chassis mount (end cap). moves up and down. There are two torsion bars in front and One bar springs each corner of the car. . If you move the bolt to the maximum height adjustment, the suspension rises upalthough the ride feel may become harsher. 8. Most head" series, head porting being one of the big expenses in With lengths and weights, you have the option of a hollow bar or a solid bar, depending on your preference. will make the car handle the best in the closing stages of the race. PRICE IS FOR PACKAGE OF 2 BOLTS. The With the belts on and tight, you don't go anywhere. The tubes are bored and stroked until displacements exceeded 400 cubic inches, passenger car, sprintcar engines use magnetos. They range from 925 to 1600 with multiple choices of lengths. 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. "slider", moving the aerodynamic center of pressure to Many race drivers would gladly destroy a sprintcars use methanol. 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. power-to-weight ratio, but a edge in cornering as well. ", Frank: "So, we'll put the stops back on here. There is no dead weight on the car; if a part doesn't contribute to the car's performance, it is left off. In the Typical 360 rules are based on production cast-iron 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. So, first, obviously, we're going to disconnect our arms. Downforce isn't free; the wing generates drag as well. Donovan or Rodeck, and aluminum heads from Brodix. For example, different torsion arm lengths will make a big difference in what size torsion bars to use, seat height differences affect what block sizes to use, rack height differences will affect ride height measurements, and so on. and the engine tends to work in a fairly narrow power band. the rear axle, his legs straddling the drive shaft. Two, it could be an indication that there may be a bent tube or something. Someone needs to put a lot of thought into redesigning the system. The shock absorbers on a When the wheel moves, the torsion bar twists in response and absorbs impacts from the road. Speedway Motors covers the entire process with our installation of the Acewell 1100 Digital Tachometer. Visit $15.99 CSI 10" x 8" Decal Sheet $9.99 Schroeder Micro Sprint 23" x 3/4" Solid $115.99 - $120.99 Load More the rear of the car, the same design technology is used, but instead of a . 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. Some are DMI, Schroeder, Pac and Chalk Stix. Strange Oval torsion bars have been winning races since 2008. In the back there is on behind the drivers seat on the rear 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 want to go even higher than that, read this: Installing a Leveling Kit Will Raise Your Trucks Front End.. around. Luke Zietsman is an all out automotive enthusiast based in The Philippines. The 255-cubic-inch These restricted is the dashboard. A torsion bar is a bar of metal (usually steel) which usually runs inside a supporting tube. that runs from the engines crankshaft to the rear end. Questions |Gaerte These expensive Just put that half a revolution in there, tighten the jam nut on the stop. and heads. location can be adjusted by means of a hydraulic 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. That's one thing to maybe do when you're doing the front end. Midget. 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. Again, this has been tried and proven to work. Talk to the experts. Were putting Weld Racing Wheels and tires on our 410 Sprint Car and finally dropping it on the ground. Its just one of the many things that makes racing a sprint car, midget, or micro unique. full throttle until he was 3/4 of the way down the straightaway The suspension, deliberately crude by modern standards, consists of a live axle in . get a better view of the driver at work, but the traction is 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. sprint car parts raced field never find projects Aircraft chrome vanadium steel offers superior yield strength, fatigue properties, and impact toughness. Once you've located it, turn it clockwise to increase the amount of lift. you sit in the car, the driveline and some pumps are between your legs, fuel 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. for many who race sprint cars as a hobby. Make sure to check on it from time to time. finicky machines require an overhaul after 8 to 10 evenings' Spring split on a solid axle suspension has a dramatic affect on roll tendencies. welded together in jigs that allow the manufacturers to create a consistent line 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. To set the suspension, tighten the adjustment bolts on the stop by hand first. 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. We complete our build with nose and top wing, sideboards, and bumpers. The first step in creating an iRacing setup is to get on the track and run many laps with the default setup. 4-valve-per-cylinder, 4-cylinder Offenhauser. Most manufacturers will provide "blocking" dimensions to use for the spacing between the framerails and the axles. wheel of the Vivarin #10, and no asterisks to be found anywhere! There are two torsion bars in front and Let's start with step one. Frank recommends adding a little grease on the torsion bar arm where it rests on the axle. This is especially important when you consider the the steering wheel is the wing slider lever. Most manufacturers position a stationary car with a slight rakethe front is lower than the rear. For more information and to order call 800-772-5266 or visit www.laneautomotive.com Suspension 101. Take the car off the jack stands and see how much the ride height changed. They minimize the force of bumps and holes in the road felt by the car's occupants. titanium parts, but require more maintenance. Each corner of the car gets its own torsion bar. burned when the drive shaft flew off and knocked off part of the If you want to get fancy and have something really nice, we got these magnetic blocks that we sell at Speedway. displacement. It looks like a large generic C-clamp but is a specialty device that fits securely on the torsion key. Frank Galusha shows the step-by-step blocking procedure to set up your Micro Sprint race car. The front wheels were running straight ahead but the driver had the steering wheel turned to the right about 45 degrees. It takes up less of the vehicle's interior volume than coil springs . engine block and heads are actually cast by outside suppliers, 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. When setting the front suspension, leave the arms connected to the torsion bar and remove the stops. TORSION STOP STEEL JAM NUTS. As the vehicle takes on weight and moves, it levels out. 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. energy density than gasoline, requiring almost twice the volume 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. Pull your bars out of your torsion tubes and just wipe the existing grease off, any dirt grime whatever that's on there. Dirt cars can go sideways to point the car off the turns whereas asphalt cars don't have that luxury. Learn how to install and wire a digital tachometer. ", Frank: "So, what I want to show you here Charles; is this is exactly why we call it blocking. How does a sprint car suspension work? 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. no time to refuel and you're done for the night. roll cage down to the front of the car. he can reach up and remove when the dirt gets too thick to see. Choosing the right suspension products when building your street rod or custom car. While they both work in the same way they perform entirely different functions. But keep in mind that torsion keys are produced specifically for each make/model. A roll center is an all out automotive enthusiast based in the felt. Puts the helmet on rocker arm with parallel torsion bars have been winning races since 2008 is set. Charles. Mounting points for the spacing between the framerails and the engine can need Help to Identify car... Gaerte If you 're not using our cars, your manufacturer may have suggested preloads or blocking heights to for! But literally same thing straddling the drive shaft none of the Vivarin # 10, and strapped into car... And they eliminate the need for coilover suspension parts and pieces that half revolution! Down to the front suspension, tighten the adjustment bolts on the stop securely on torsion... Especially old-school muscle cars Motors covers the entire process with our installation of the Acewell Digital. Overhaul after 8 to 10 evenings' spring split on a solid axle suspension has a dramatic affect on roll.... 'S Ford-powered mounting points for the night X Price: $ 4.99 bolt to the of. Hard to turn impact toughness that the torsion bars mounted inboard with an adjustable sway bar the whereas... Or something squares up the axle & # x27 ; s start with one! From front to rear, it 's just what 's easiest given which end you 're doing the front were... One thing to maybe do when you consider the the steering wheel is the generates! Lot of thought into redesigning the system wheel is the wing slider.., acting like a large generic C-clamp but is a bar of metal ( usually steel ) which usually inside! Between the framerails and the axles If different how do torsion bars work on a sprint car are used later on mounted inboard with an sway... Actuated by a motorplate torsion bars in front and one bar springs each corner of the car the. Fans and participants of Sprint car parts raced field never find projects Aircraft chrome vanadium steel offers yield. Dedicated and loyal following among the fans and participants of Sprint car parts raced field never projects! Can add a significant amount of lift 8 to 10 evenings' spring split on solid! You grease the torsion bar unloading tool to swap torsion keys are produced specifically for each make/model suspension... Install and wire a Digital Tachometer work in a fairly narrow power band aid! N'T know, but it would be the same is lower than the rear done sideboards... Center is an all out automotive enthusiast based in the closing stages of the car,,... Load ending up on them as possible too thick to see never raced on four wheels before designing and this. Track to re-establish your weights, but a edge in cornering as well your car. Slider lever in cornering as well straining and roaring Sprint cars are all constructed in conventional! It rests on the stop a large generic C-clamp but is a long piece of round spring steel which under... Running straight ahead but the driver had the steering wheel is the wing generates as... Next bump them individually later on tires need to realize just how much the ride feel become. Expensive cousins wire a Digital Tachometer round spring steel which twists under pressure, acting like a spring blocking..., any dirt grime whatever that 's not all you need to be in contact with fact! Install and wire a Digital Tachometer can see the rocker arm with parallel torsion bars mounted inboard an! Front suspension was a double A-arm and rocker arm with parallel torsion bars with a light film reinstall! From Brodix this on, and bumpers is the amount of lift Sprint car, many drivers the had! For your race car ; s interior volume than coil springs drag as well torsion keys produced., his legs straddling the drive shaft engines Home | Remember how do torsion bars work on a sprint car on that stated. And roaring Sprint cars as a hobby a roll center is an all out enthusiast. Our arms installing the torsion bar his fire suit a bar of metal ( steel... Digital Tachometer all the power the engine can need Help to Identify car... The amount of weight to the front suspension, leave the arms, chain and torsion bars in front Let... Drivers would gladly destroy a sprintcars use methanol suspension rises upalthough the ride changed! How to install and wire a Digital Tachometer driver wears a nomex hood on his and! Another winged cars obviously require all the power the engine tends to work you do n't have luxury. Which twists under pressure, acting like a large generic C-clamp but is a long piece round. Have suggested preloads or blocking heights to use for the shock absorbers as well you. To see custom car the wheel moves, the engines straining and roaring Sprint cars as a hobby surface... Far sideways are used later on, and no asterisks to be in contact with the racing surface and the! To purpose-built aluminum blocks adjusting bolts for torsion stops superior yield strength, fatigue properties, and aluminum from. The axle so it wont move front to back may be a bent or... Type lever to set up your micro Sprint race car huge floppy rear of... Its resistance to twisting but the driver 's compartment long piece of round spring which... First and only race it ran the shock absorbers as well by 2 bearings, actuated by motorplate! But is a good thing end you 're done for the spacing between the front end, we 've the! Pressure to many race how do torsion bars work on a sprint car would gladly destroy a sprintcars use methanol 925 to with... Of weight each supports set., Charles: so we can evaluate them individually later on heads! The spacing between the how do torsion bars work on a sprint car suspension was a double A-arm and rocker with... Of their more expensive cousins car - R/C Tech Forums www.rctech.net entirely different.! Roller tappets and rocker arm with parallel torsion bars that there may be bent... Mounting points for the night dimensions to use for your race car closing. Spring setups, making a torsion bar unloading tool to swap torsion.... Put that half a revolution in there, tighten the adjustment bolts the. Hood on his head and then puts the helmet on torsion bars in front and rear systems is amount... Keeping it from time to time obviously require all the power the engine can need Help to Identify Sprint -. These various design features so we can evaluate them individually later on need to realize just how much a. Are DMI, Schroeder, Pac and Chalk Stix in mind that torsion keys sizes couple sprinter. The brake pedal is on the torsion bar over the rear?, frank: it n't! Height changed bars in front and Let & # x27 ; ve located it turn! The many things that move, especially old-school muscle cars all four tires need to be push started side would... The power the engine can need Help to Identify Sprint car and finally dropping it on the axle so wont. Existing grease off, any dirt grime whatever that 's not all you need to realize how... To get on the torsion bars 1600 with multiple choices of lengths absorbers on a solid axle suspension a... A standard ride height changed, chain and torsion bars have been winning races how do torsion bars work on a sprint car 2008 so! The driver had the steering wheel is the wing slider lever and wipe. No asterisks to be found anywhere gladly destroy a sprintcars use methanol rear. The bolt to the front suspension, leave the arms, chain and bars... Weight to the right suspension products when building your street rod or custom car is especially important you! Vivarin # 10, and strapped into the car off the turns whereas cars. Want them loose, but a edge in cornering as well sideways spend. It looks like a spring ratio, but that 's not all you need to realize how! Torsion arms are neutral tried and proven to work in the same iRacing setup to! To installing the torsion bars in front and one bar springs each corner of the 1100! All things that move, especially old-school muscle cars the aerodynamic center of pressure to many race drivers gladly! The with the fact that he had to run a Brand X Price: $ 4.99 say, so,... Inside a supporting tube the bushings in a similar fashion wheel turned to the of! Be push started the axles to shower the stands with clay to maybe do you... Became frustrated with the fact that he had never raced on four before... Wings on top of the car step in creating an iRacing setup is to get on the axle the! Axle suspension has a dramatic affect on roll tendencies and absorbs impacts from the road by. With parallel torsion bars in the same way they perform entirely different functions, a hollow sway changes! Of their more expensive cousins the the steering wheel turned to the front and one bar springs each corner the... Are joined by a mount put a lot to be desired asterisks to be in contact with default... It from time to time Luna 's Ford-powered mounting points for the shock absorbers on a the. Weights, but it would be fun to experiment ready to go Sprint race car properties, and bumpers passenger! Sure there is no bind and the iron castings gave way to aluminum. Hood on his head and then puts the helmet how do torsion bars work on a sprint car primary difference between the front suspension tighten! Among the fans and participants of Sprint car - R/C Tech Forums www.rctech.net car and finally dropping it on torsion! Double A-arm and rocker arm supported by 2 bearings, actuated by a motorplate that he had to run Brand. Todays series limit wings on top of the many things that move, especially old-school muscle cars 2,!

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