4 link rear suspension geometry software

There is no comparison to any other 4link software. Apr 30, 2009 suspension geometry part 2 roll center. Unlike ladder bars, a fourlink rear suspension provides many chassis adjustment choices, resulting in numerous possible instant centers. Four link kits create a definitive center for a rear suspension, and are commonly used with a. Along with the movement of the chassis, the front link attachment points move, and the rear ones move correspondingly. The suspension analyzer does a complete 3d suspension analysis, including bump steer, ackerman, caster gain, anti dive, tire scrub, camber gain and much more. No part of the program or code shall be reproduced for commercial use. Introducing the 4link wizard software for microsoft windows 95, 98, me, xp, 2000 or nt. There is no comparison to any other 4link software available. This involves placing the force application points g and h on the centre of gravity. If your car wheel stands too much, you can angle the 4 link bars closer together at the front to move the instant center closer to the rear of the car.

Jerry bickels 4link wizard professional version jerry bickel race cars, in cooperation with etc, inc. When the race car accelerates, the rear end wraps up, placing the upper bars in tension while the lower bars are held in compression. Once the lower crossmember and the triangulated frame mounts are in place and while the suspension is. A typical 4 link will have the rear attaching point of the top bar a few inches above the axle center but will have the attaching point of the bottom bar several more inches below the axle center. Easily monitor proper ride height and lift with the userfriendly diagnostic software.

Apr 23, 2015 because the respective brackets found on something like a four link are under load during acceleration and braking, they must be stout. These unwanted characteristics are caused by incorrect 4link geometry and they. With the back half being done, work to the front suspension system will now begin. Calculates ics for your brackets, regardless of manufacturer. A stickbystick build of a true longtravel prerunner.

The angle of the top bar is the final ingredient to determining how much bite the tire will have, and for how long. Actual linkbars finish color is texturedblack powder coat. The angled upper links provide lateral support for the rearend housing, eliminating the need for an additional panhard bar or watts link system. Helpful suspension geometry calculators barnes 4wd. Rear suspension analysis tuning all types with heavy emphasis on 4link, zlink and swing arm types.

It works especially well under hard acceleration at the drags or hard cornering at the track. Add a 4 link suspension kit to your car or truck to add performance and adjustability to your suspension. Roll steer, drive angles, birdcage indexing effects, trailing arm toe, panhard devices, lift and pull bars, 6th coils, damper shocks, stacked, 2 step and double spring. Chris alstons chassisworks, inc chassisworks weldin. They include the 4link with frame and housing brackets, coilover rear shocks with springs ratematched to your application and a choice of a panhard bar for street use or diagonal link race. Tci 4754 chevy pickup truck 4 link rear suspension kit. All these measurements are saved in the library for retrieval, analysis or modification in the future. Check out tuning 4 link rear suspensions for the drag strip. Suspension geometry an overview sciencedirect topics. Installation instructions 19551957 chevy triangulated 4. I use this program almost daily, both in my design.

A fullyadjustable 4 link suspension allows you to move the instant center not only up or down, but also forward or back by increasing or decreasing the angle between the bars. There is no comparison to any other 4 link software available. Download 4 link suspension calculator for free windows. Discussion in the hokey ass message board started by blue one. Roll steer, drive angles, birdcage indexing effects, trailing arm toe, panhard devices, lift and pull bars, 6th coils, damper shocks, stacked, 2 step and double spring arrangements, 5th coils and shocks, leaf springs, tall vs. The towerhauler mode ignores the input and allows the vehicle to kneel even if the vehicle is moving. We are designing the front suspension, and will input data for the lh side. This kind of suspension always has some kind of panhard bar to keep the axle centered. Antisquat in a linked suspension system determines how the rear end of a. Most of our 4links are sold in complete rear suspension packages. Upper lateral link, lower reversed aarm, twin trailing links rear the classis 60s sports and racing car rear suspension. This is a 4 link suspension with all 4 links running parallel to each other. Fourlink kits create a definitive center for a rear suspension, and are commonly used with a.

The parallel 4 link is designed to keep the rear axle centered, and to keep the pinion angle from changing keep the axle from rotating. A stickbystick build of a true longtravel prerunner rear. A variation on the radius arm suspension is the parallel fourlink, shown in the figure above. Another of my rigs is being built with a dual triangulated 4 link. Figure 4 three link front left and four link rear right four link suspensions, 2007 the three link suspension in figure 4 three link front left and four link rear right uses three primary links shown in blue. Universal weldon rear triangulated 4link suspension kits for offroad. Notice that the chassis input has updated, and now the y values can be input. Figure 4 three link front left and four link rear rightshows a three link and four link system. A 4 link suspension system is commonly used to replace leaf springs and shocks in vehicles to provide much greater stability while cornering, greater tire contact and traction for drag racers, and reduces body roll in lifted offroad trucks and suvs. The 4links arms run parallel forward from the axle housing, longitudinally along the framerails, mounting to pivot points on the frame. Aftermarket manufacturers make kits that retrofit an existing radius arm suspension to a parallel fourlink design and use coil springs and a track bar to center the axle. Looking at various rear suspension configurations, design a rear suspension. A popular choice for rear suspension systems and gaining in popularity as a choice for front suspensions, our 4 link suspension kits allow for perfectly balanced triangulation, providing maximum control even at high speeds. Track all chassis information including corner weights and center of gravity.

Jul 19, 2004 the reason it work is that the offset location of the upper link causes the rear tires to be loaded equally while climping instead of having the right rear squat and left front lift like a triangulated 4 link would do. This is extremely important in order to maintain proper suspension geometry. You enter heights above the ground and distance ahead of the front axle for up to 6 holes for all 4 brackets for your car, or any number of cars. The 4 link solid axle rear suspension design incorporates a solid drive axle and coil springs, with two parallel links per side for fronttorear positioning of the axle.

The universal triangulated 4link enables you to install a hightravel rear suspension using a minimum of components and custom fabrication. Lift bars, slapper bars, super stock springs, leaf links, ladder bars, threelinks, fourlinks, and torque arms there may be others too, but its a start. Ultraride is a total conversion suspension that replaces a standard leaf spring suspension system. Design of a rear suspension configuration for a live. Rear suspension design three link four link two link. You can also use this function to compare front and rear suspension although be careful as only the model at the front of the drawing is saved within the url. Fourlink kits create a definitive center for a rear suspension, and are commonly used with a panhard or track bar to improve vehicle handling because it lowers your offroad vehicles center of gravity. Take a look at performance trends calculators here.

The 4link calculator lets you input, view, save, analyze and compare your 4 link rear suspension geometry. Lower lateral link, upper reversed aarm, twin trailing links rear a variation on. I have not modeled a 4link suspension with fusion360 as i rarely use. Will this tell me what changes to my midsize metric rear suspension will do. Open config and change from swing axle lengths to suspension link chassis mounting points. Rear suspension screen lets you describe 8 different types of rear suspensions. It makes sense, since this is the bar that also dictates the ic once the rest of the parameters are set.

On any rear suspension system assuming it is a fullforward system, even a twolink, moving the ic higher will produce a higher percentage of antisquat, making the truck not squat as. When duplicate and compare is active this button switches the order of the front and rear models. The traditional way the 4 link is setup on off road rigs is to have 2 links holding the axle from moving front to back and 2 links mounted in a triangle shape, used to locate the axle from side to side. The driveshaft will be on a slight angle downwards in relation to the yoke in the rearend. This rig, most often driven by my son, works pretty well with just the short arms.

If you are on the market for a more indepth, customizable 4 link suspension calculator, you will likely need to purchase software. The flatter the top bar, the easier it is to use its pull on the chassis to plant the tire. Of all of the systems, the most common youll see today is the equal length fourlink, probably followed by the ladder bar. If you press this button in edit mode its easy to compare the setup values of each model. Chassis master is easy to set up and calculates all possible ic locations, rise, squat, corner weights, center of gravity and even automatically adjust to changes in ride height or tire size. Calculates all possible instant center locations plus percentage of rise and squat. Over the years, drag racers with door cars have gone through all sorts of suspension arrangements. Choose from jegs, competition engineering and other high strength 4 link suspension kits or replacement parts.

I have a collection of 4link articles from various sources but most of them are for trail trucks or rock crawlers so i was wondering what would be the major difference in geometry from one these rigs that are mostly concerned with maximizing articulation and a desert truck that has long travel at high speeds. There is no comparison to any other 4 link software. I finally put the car on a 4 post and got measurements of every adjustment hole and just plotted all the intersect lines on my cad software that way i. Upper and lower virtual aarms, steering link front upper and lower virtual aarms, toe link rear as used on some mercedes rear. To do this you will need some kind of angle finder, either digital or a. Crafted from the highestgrade components and offered at competitive prices, our products guarantee the level of quality youve been looking for. Computer program to simulate and analyze rear suspension 4link setups for. Performance trends 4 link calculator demo movie saving and. Universal weldon triangulated rear 4 link suspension kits for truck suv with two 2500 air bags and rear air bag mounts. Parallel 4 link rear suspension system how to build. Used by many of the best teams in drag racing, chassis master is easy to set up and input information. As before, this produces greatly increased jacking, and most designers would find this too disadvantageous. Performance trends offers a few different options, including a free trial.

The only aftermarket link type suspension that i have come across that does not bind is a threelink using spericalheim. Quickly and easily see the affect movement has on your suspension setup and adjust on the fly using the drag and drop editor. James balkwill, in performance vehicle dynamics, 2018. Chassis master software tim mcamis performance parts.

The ambulance mode prevents the suspension from kneeling when the vehicle is in gear with a system enable signal. A 4link suspension system is commonly used to replace leaf springs and shocks in vehicles to provide much greater stability while cornering, greater tire contact and traction for drag racers, and reduces body roll in lifted offroad trucks and suvs. The 4link wizard helps you determine the ic choices available with your fourlink bars so you can home in on the sweet spot and reap the benefits of a fourlink suspension. Just a quick question for those of you in the know. The shorter upper bars change angle more rapidly than the longer lower bars, so there is an angle between their respective planes, which defines an instant center that gradually moves from infinity ahead of the car to somewhere in the middle of the car, as the rear drops. The reason it work is that the offset location of the upper link causes the rear tires to be loaded equally while climping instead of having the right rear squat and left front lift like a triangulated 4link would do.

Covers conventional 3 link and 4 link suspensions allows bird cages on one or both. I hadnt thought of the high track bar helping the side hill capability with the high roll center but that would make sense. Suspension types include trailing arms which includes 3 links and truck arms with coil springs, torsion bars, jacobs ladder and panhard bars, leaf springs, and various 4 links like metric, chevelle and late model mustangs. This winter, on the 12 jk, we will put ylink long arms on the front, but keep the 4link rear. They include the 4 link with frame and housing brackets, coilover rear shocks with springs ratematched to your application and a choice of a panhard bar for street use or diagonal link race. The air suspension provides increased operator and passenger comfort, ease of access and overall safety. In this article well cover what we consider to be the three most important elements. This allows us to specify the wheel location both laterally and longitudinally, which will then calculate the track, wheelbase and wishbone link lengths. These systems are commonly found on vehicles used for the. Design of three and four link suspensions for off road use. Simply take 8 easy measurements with a tape measure and. Vehicle travel is simulated by dragging the image with the mouse or with a scroll bar.

This winter, on the 12 jk, we will put y link long arms on the front, but keep the 4 link rear. Transferring all of that engine torque to the rear wheels requires a good rear suspension system to handle it. Most of our 4 links are sold in complete rear suspension packages. Autoware autoware inc rear suspension geometry software. Figure 4 three link front left and four link rear right fourlink suspensions, 2007 the three link suspension in figure 4 three link front left and four link rear right uses three primary links shown in blue.

Feb 18, 2016 with the back half being done, work to the front suspension system will now begin. Oct 26, 2017 the shorter upper bars change angle more rapidly than the longer lower bars, so there is an angle between their respective planes, which defines an instant center that gradually moves from infinity ahead of the car to somewhere in the middle of the car, as the rear drops. The 4link calculator lets you input, view, save, analyze and compare your 4link rear suspension geometry. This is an example of a typical 4 link setup in the rear of a rig. Tci parabolic 5559 chevy pickup truck 4 lowering rear leaf kit. It makes sense, since this is the bar that also dictates the ic once the rest of the parameters are set flatter is longer, and longer. Crafted from the highestgrade components and offered at competitive prices, our products guarantee the. Calculate the 4link setup in any car, with any brackets in less than 15 minutes with this easy to use quartermax universal 4 link plotter. As you drag the mouse or the scroll bar, the car moves up and down in response.

Rear triangulated 4 bar bushings and geometry the h. Many people do not take this into any consideration with 4 link or ladder bars or 3 link suspension. Typical rear suspension screen, here analyzing an angled 4 link rear suspension and driveshaft movement and u joint angles. Kit can be used with johnny joints or the big 16 fk heims.

If your car wheel stands too much, you can angle the 4 link bars closer together at the. Increase right rear trail lengthen right side 4 link rods 2 turns at a time lower center of gravity height lower ballast, left side ride heights category. A newer style that works well as an allaround type of suspension and also does great on the track. Antipitch is the name given to a suspension geometry, front and rear that prevents pitch under braking. Each mount is built at a neutral angle to keep the suspension joints in a position so they do not waste any of the joints rotation and cause damage to the joint in those crazy articulation spots on the trail. I have not modeled a 4 link suspension with fusion360 as i rarely use. The 4 link calculator lets you input, view, save, analyze and compare your 4 link rear suspension geometry. This program is provided free of charge for personal use in the assisting of suspension calculations. Links may be made to the site, but the product may not be redistributed in any way other than by direct download from. This thesis outlines the process of designing a three link front, and four link rear suspension system. The 4 link wizard helps you determine the ic choices available with your fourlink bars so you can home in on the sweet spot and reap the benefits of a fourlink suspension. A variation on the radius arm suspension is the parallel four link, shown in the figure above. Aftermarket manufacturers make kits that retrofit an existing radius arm suspension to a parallel four link design and use coil springs and a track bar to center the axle.