4 link front suspension design software

Pro 4links use with following clips and suspensions. A 4link system separates the functions of positioning the axle and supporting the vehicle. This configuration is common in general motors cars built in. Take a look at performance trends calculators here.

The classis 60s sports and racing car rear suspension. A fourlink suspension uses links to locate the axle from moving side to side and front to back, while allowing it to travel up and down and articulate. This article explains the workings of the 4 link suspension and the tuning methods used to maximize its performance under various track conditions. Add a 4 link suspension kit to your car or truck to add performance and adjustability to your suspension. As you drag the mouse or the scroll bar, the car moves up and down in response. Heavy duty rod ends are a must on any 4 link that will take right pedal abuse. The rock slayer offroad 4link kits eliminate the panhard bar its a true 4link. If you are on the market for a more indepth, customizable 4 link suspension calculator, you will likely need to purchase software. This information applies only to 4 link rear suspensions having links floated. Over the years, our industry has seen free suspension design software come and go. Choosing the right shocks, coilovers or air, reservoir of mono tube all details will be discussed, plus ian builds a mock up chassis and gives stepbystep instructions on how to calculate and build his favorite set up. An indepth technical look at fourlink truck suspensions from design to a full suspension installation 4 wheel and offroad magazine. I am trying to model a triangulated 4 link suspension setup and am having difficulties in setting up the joints.

Jerry bickels 4link wizard professional version jerry bickel race cars, in cooperation with etc, inc. This is the source for tech tips, blue prints, drawings and plans for the do it yourself automotive hobbyist. The metric fourlink suspension design is a bit different than most other rear suspensions. If the svsa is angled upward toward the front, you will have roll oversteer, which will make your car unpredictable and twitchy on turnin. From heidts and ridetech, to detroit speed and helix, and many more, summit racing carries a massive selection of four link suspension kits from the most trusted brands in performance suspension. Performance trends offers a few different options, including a free trial. Parallel 4 link rear suspension system how to build. Computer program to simulate and analyze rear suspension 4link setups for.

The driver will observe this as a loss of grip of the front of the car, and is therefore one of the most. After looking online at a bunch of rock crawler supply stores im thinking on going with 2. Summit racing has everything you need to build the triangulated or parallel 4link suspension setup you want. Antidive geometry in a linked suspension system determines how the front. Depending on the type of racing for race cars, the road surface and evolution of the vehicles, the suspension is designed to accommodate multiple requirements. This is an example of a typical 4 link setup in the rear of a rig. When building a 4link suspension, the lengths of the links, their positioning, and the angles at which they are mounted, will all determine how the suspension affects the vehicle chassis under acceleration, braking, and cornering. Front and rear suspension analysis simulation software program.

A variation on the radius arm suspension is the parallel fourlink, shown in the figure above. Metric fourlink suspension design circle track magazine. This kind of suspension always has some kind of panhard bar to keep the axle centered. Front suspension ffe software motochassis by tony foale. Both versions of the software provide the same features. Regardless of the type of vehicle you are building we have the products and free information that will save you time and money. Designed and manufactured with attention to every detail, the product features excellent quality and durability you can count on for years to come.

A guide to tuning your four link suspension system posted by wayne scraba on april 23. This video will help you on build so you can get the right setup. These unwanted characteristics are caused by incorrect 4link geometry and they. Trs magazine welding brackets on your trucks frame. Chris alstons chassisworks, inc chassisworks pro 4link.

Discussion in general tech started by bbaxter51, oct 10, 2011. When duplicate and compare is active this button switches the order of the front and rear models. Discussion in the hokey ass message board started by. Your source for hot rod blueprints, drawings and tech tips. Stateoftheart 4link suspension kits we offer on our website are the superior alternative to the inherent performance limitations of your leaf springs. One of the most common questions we get about suspension setup and tuning is how 4 link geometry affects the performance and handling of a vehicle. Lower aarm, upper virtual aarm, steering link front lower aarm, upper. And our cameras roll to jellico, tn for the xrra nationals in rock. Adjustable 4link suspension system is infinitely adjustable with 18 inch increments allowing hundreds of instant center options. Unlike ladder bars, a fourlink rear suspension provides many chassis adjustment choices, resulting in numerous possible instant centers.

This thesis outlines the process of designing a three link front, and four link rear suspension system. The bottom 2 links keep the axle in place front to back. Fab9 rearend housing mild steel for drag race pro 4link 3 axle tubes. Susprog3d is the premier kinematic suspension design and analysis tool. Along with the movement of the chassis, the front link attachment points move, and the rear ones move correspondingly.

From heidts and ridetech, to detroit speed and helix, and many more, summit racing carries a massive selection of fourlink suspension kits from the most trusted brands in performance suspension. Besides these links controlling and transmitting the loads placed on the axle during acceleration and braking, the bottom links also control the axle placement front to rear. A multilink suspension is a type of vehicle suspension design typically used in independent suspensions, using three or more lateral arms, and one or more longitudinal arms. Pro 4 links use with following clips and suspensions. Typical rear suspension screen, here analyzing an angled 4 link rear suspension and driveshaft movement and u joint angles.

Lets compare two popular types of 4link rear suspension systems. The drag race bars when set up correctly form an open ended triangle to permit you to change what is called the cars instant center theoretical point that the tires pushto achieve the ultimate in traction control. Most of our 4 links are sold in complete rear suspension packages. 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. 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. Choose from jegs, competition engineering and other high strength 4 link suspension kits or replacement parts. All rock slayer offroad 4link kits are authentic double triangulated 4link front and rear kits. I have had five lift kits in my 76 and was not satisfied with any of them, especially in the front. Summit racing has everything you need to build the triangulated or parallel 4 link suspension setup you want. A guide to tuning your fourlink suspension system posted by wayne scraba on april 23, 2015 at 2. Drag race four link suspension use spherical rod ends for strength and extreme adjustability. 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.

Development and analysis of a multilink suspension for racing. Producing quality computer tools for racers and engine builders since 1986. Lower lateral link, upper reversed aarm, twin trailing links rear a variation on. With the trailing arms parallel i get serious bind within 100mm of travel but with the rear pivots 20mm closer. 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. Im able to get the motion to work correctly until i add the upper bar shown in the attached image in red im wondering if the joints think they are conflicting the bottom bar joints. When building a 4 link suspension, the lengths of the links, their positioning, and the angles at which they are mounted, will all determine how the suspension affects the vehicle chassis under acceleration, braking, and cornering. This lift kit by fabtech is the result of the companys hard work in developing aftermarket suspension solutions for discerning offroad enthusiasts. The 4 link calculator lets you input, view, save, analyze and compare your 4 link rear suspension geometry. Previously i had begun this on another board and it got too large. It a pain in the ass to fit a fully triangulated 4 link setup under the front of your rig which is why you see a lot of people running a 4 link in the rear and a 3 link setup in the front. 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.

The four link rear suspension is designed to locate the rear axle with four links, two on each side. As another proof of point, i currently have a mock up of another 4 link dedion with 710mm long nonparallel trailing arms with vertical seperation of the pivots at 310mm front and 290mm rear a full 20mm difference. Whether it is for a jeep, rock bouncer, rock crawler or even a race. Springs take care of supporting the vehicle which leaves the links free to deal with locating and articulation. Whether it is for a jeep, rock bouncer, rock crawler or. Dec 26, 2015 4 link suspension explained rock rods tech. A multi link suspension is a type of vehicle suspension design typically used in independent suspensions, using three or more lateral arms, and one or more longitudinal arms. Four link front suspension this is a short description of why and how i built the four link front suspension in my 76 ford bronco.

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. Hey guys im planning on building a 4 link front suspension for my 2005 project truck. Mumford linkage as an option for 3 and 4 link live axles. A 4 link system separates the functions of positioning the axle and supporting the vehicle. Welcome to this is the source for tech tips, blue prints, drawings and plans for the do it yourself automotive hobbyist. Sep 01, 2009 the metric four link suspension design is a bit different than most other rear suspensions. In this article well cover what we consider to be the three most important elements. This configuration is common in general motors cars built in and around the 1980s as well as some ford. Mar 01, 2007 an indepth technical look at four link truck suspensions from design to a full suspension installation 4 wheel and offroad magazine.

How to choose a custom suspension, building a double triangulated 4 link, plus rock racing from jellico, tn. Most of our 4links are sold in complete rear suspension packages. The 4link calculator lets you input, view, save, analyze and compare your 4link rear suspension geometry. From infinitely adjustable 4link brackets to heavy duty 4link bars, antiroll bars, sway bars, wishbone and housing locator kits all the way to penske shocks, nitrogen fill kits, strange engineering components and more, you can find what it takes to put together a stateoftheart drag racing suspension. 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. Because of its unique design, this adjustable 4 link suspension system does not require multiple sets of brackets as the upper and lower titanium brackets can be flipped vertically to include all possible combinations. A variation on the radius arm suspension is the parallel four link, shown in the figure above. The full installation zipped folder is a zipped folder, which has to be unzipped and installed. Oct 26, 2017 i am trying to model a triangulated 4 link suspension setup and am having difficulties in setting up the joints.

Drag racing suspension tim mcamis performance parts. If you press this button in edit mode its easy to compare the setup values of each model. As such, it appears on your registry and it is accessed via the start menu. In a 4 link setup there are 2 top and 2 bottom links. Upper lateral link, lower reversed aarm, twin trailing links rear the classis 60s sports and racing car rear suspension. You need at least 45% of the cars weight on the rear wheels to make a 4 link suspension work properly. Vehicle travel is simulated by dragging the image with the mouse or with a scroll bar. For windows 7, 8 and 10 with opengl see the faq for more details faq for more details. Jul 29, 2019 a demo of our 4link suspension software.

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. Upper and lower virtual aarms, steering link front upper and lower virtual aarms, toe link rear as used on some mercedes rear. Quickly change instant centers without affecting pinion angle, preload, or wheelbase. Stateoftheart 4 link suspension kits we offer on our website are the superior alternative to the inherent performance limitations of your leaf springs. The upright or knuckle attaches the wheel, brake rotor, hub, brake caliper and steering arm to the vehicle as shown in diagram ku1 below. These systems are commonly found on vehicles used for the. Chapter 4 discusses the mathematical background of multilink. Typical rear suspension screen, here analyzing an angled 4 link rear suspension and. There are dozens of variations of suspension types used on race and passenger vehicles. Figure 4 three link front left and four link rear rightshows a three link and four link system. In fact, most offroad community forums share links to calculators that do not work or redirect you to an undesired webpage.

This is a 4 link suspension with all 4 links running parallel to each other. 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. Our 4link kits set up your vehicle at stock ride height. The two most critical factors to the performance of a 4 link suspension are the link lengths designed into the suspension and the angles to which the links are adjusted. Once the front tires are in the air, i do not believe that.

The basics of antisquat, antidive, and roll center. Once the front tires are in the air, i do not believe that they have an effect upon neutral line location. A well designed 4link provides good forward bite and the proper amount of roll steer. In a 4link setup there are 2 top and 2 bottom links. 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. From infinitely adjustable 4 link brackets to heavy duty 4 link bars, antiroll bars, sway bars, wishbone and housing locator kits all the way to penske shocks, nitrogen fill kits, strange engineering components and more, you can find what it takes to put together a stateoftheart drag racing suspension. With 4link suspension, the two functions of locating the rear axle and supporting the vehicle, are isolated. A newer style that works well as an allaround type of suspension and also does great on the track.