This kit is intended for axles without a front truss. I dont know if they lack what people are looking for or what is going on. Jun 30, 2018 on this episode of rock rods tech its trailing arm suspension explained by jake burkey. Some of these suspensions are virtually bolton installations, only requiring a minimum of welding and fabrication, and they look just as good as they perform. The 4links arms run parallel forward from the axle housing, longitudinally along the framerails, mounting to pivot points on the frame. Chandler spent nearly 800 hours using a cad program to design and refine. Vehicle suspension design includes a number of compromises to provide good leveling of stability and ride comfort. The front is a threelink, while the rear is a fourlink with triangulated upper links.
Universal rear 4link kit daves customs unlimited, llc. Unlike ladder bars, a fourlink rear suspension provides many chassis adjustment choices, resulting in numerous possible instant centers. A 4link system separates the functions of positioning the axle and supporting the vehicle. The vertical separation of the top and bottom links, mounted at the. The major benefit of a leafspring suspension over a four link is cost and maintenance. This is an example of a typical 4 link setup in the rear of a rig. Calculations will also allow you to configure your preferred antisquat setting and get your roll axis where you want it to be, both of which can make or break your offroad adventures. 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.
An indepth technical look at fourlink truck suspensions from design to a full suspension installation 4 wheel and offroad magazine. And our cameras roll to jellico, tn for the xrra nationals in rock. The three link suspension in figure 4 three link front left and four link rear right uses three primary links shown in blue. Stateoftheart 4link suspension kits we offer on our website are the superior alternative to the inherent performance limitations of your leaf springs. 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. 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. Front and rear suspension analysis simulation software program. Like the front system, the vertical separation of the links resists the drive and braking torsion.
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. A well designed 4link provides good forward bite and the proper amount of roll steer. How to choose a custom suspension, building a double triangulated 4 link, plus rock racing from jellico, tn. Rear coilover conversion system for 6787 91 gm trucks. Genright four link rear suspension jeep tj, jeep, offroad jeep.
This paper consists in a definition and analysis of rear suspension geometry to an offroad vehicle. Mar 01, 2007 an indepth technical look at four link truck suspensions from design to a full suspension installation 4 wheel and offroad magazine. Ford integral link independent rear suspension as used on the 2015 mustang. Drag race four link suspension use spherical rod ends for strength and extreme adjustability. I kinda think that a 4link rearis better than a 3 link rear though. Story by jim oaks one of the hottest trends on serious off road rigs now is triangulated 4 link suspensions. Jake will be teaching you all that there is to know about trailing arms and why you need trailing arms off. Is there anything out there thats not going to eat into my building budget too much. Rock slayer offroad 4link buggy killer and slayer double triangulated suspension for toyotas and jeeps. Apr 6, 2017 the triangulated 4 link rear suspension. Whether it is for a jeep, rock bouncer, rock crawler or even a race.
This article explains the workings of the 4 link suspension and the tuning methods used to maximize its performance under various track conditions. Story by jim oaks one of the hottest trends on serious offroad rigs now is triangulated 4link suspensions. I too have fallen victim to the desire to build my own 4 link and began doing research on how to design and construct one. When youre ready to move beyond leaf springs, this is the way. Bivouac bravo i am in the process of building an extreme off road trailer built big enough to.
Heavy duty rod ends are a must on any 4 link that will take right pedal abuse. Big suspension travel and clean suspension geometry are securely in place on this cj. Computer program to simulate and analyze rear suspension 4link setups for instant center, pinion angle and driveshaft angle change, antisquat %, and more for drag racing. Instead, this system is designed to withstand the extremes of offroad racing, such as the jeepspeed series. From a practical standpoint, its hard to have links that are too long. A multilink suspension is a type of vehicle suspension design typically used in independent. Double triangulated rear 4link suspension kit w links. The frame side control arm brackets cross member are prewelded and is to be welded permanatly into place on the frame. Im in the process of redesigning the front suspension for the rally fighter at local motors and this software is very simple to use and gives great graphs and animations. This is a triangulated 4link rear kit that is universal that can be used on any jeep cj, yj, tj, early bronco, or toyota. Springs take care of supporting the vehicle which leaves the links free to deal with locating and articulation. The rock slayer offroad 4link kits eliminate the panhard bar its a true 4link. This is a 4 link suspension with the two upper links angled in toward the differential. 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.
This video will help you on build so you can get the right setup. The mounts in this kit are universal and can be cut or trimmed to be mounted on any jeep tj or yj. These allow vertical motion while resisting forward and aft motion. Dec 26, 2015 4 link suspension explained rock rods tech. 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. Lower lateral link, upper reversed aarm, twin trailing links rear a variation on the above. Figure 4 three link front left and four link rear rightshows a three link and four link system. A guide to tuning your four link suspension system posted by wayne scraba on april 23. A variation on the radius arm suspension is the parallel four link, shown in the figure above. Unmatched in strength, reliability and quality, the adjustable 4link suspension system uses the finest nas hardware available and is compatible with several different sizes and designs of rod ends, including 78 and 34. Want the latest ord news, sales, information, and general scuttlebutt. Offroad design rear coilover convervion for 6787 91 chevy.
Design of three and four link suspensions for off road use benjamin davis. Jaime turned to genright offroad for legend extreme front and rear suspension systems. Suspension designs three and fourlinks weve grouped these together because they are essentially identical when viewed from the side. Download the free susprog3d for windows xp, vista, windows 7 and 8 evaluation program.
Weve taken the knowledge from running thousands of miles of trails and developed suspension kits with optimized geometry for unmatched bindfree suspension performance. Upper lateral link, lower parallel links, twin trailing. Double triangulated 4 link design is the ultimate off road. Computer program to simulate and analyze rear suspension 4 link setups for instant center, pinion angle and driveshaft angle change, antisquat %, and more for drag racing. Artec industries easy 3 link kit g adjustable upper link this kit is based off our most popular parts weve sold our customers for a 3link with panhard bar. The major benefit of a leafspring suspension over a fourlink is cost and maintenance. There are dozens of variations of suspension types used on race and passenger vehicles. While there are other long arm, 3 link, radius arm systems on the market, these do not provide the reduced caster change and useable articulation on a jk, with the factory gas tank, that a fabtech 4 link long arm system can. This information applies only to 4 link rear suspensions having links floated.
The four link rear suspension shown in figure 4 three link front left and four link rear right uses four primary links and no secondary links. Adjustable 4link suspension system is infinitely adjustable with 18 inch increments allowing hundreds of instant center options. Artec industries easy 3 link kit g adjustable upper link. 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. The four link is also used heavily in offroad racing and drag racing. As used on the pre 84 chevrolet corvette with the drive shaft acting as upper lateral link and a leaf spring and bmw e36 with bespoke lateral links and coil springs trailing arm, upper and lower lateral links, toe control link rear as used on the honda integra type r. Rear suspension design three link four link two link. 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.
I have a collection of 4 link 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. Trs magazine welding brackets on your trucks frame. A newer style that has come stock in many vehicles and that works well as an allaround type of suspension. Choose from jegs, competition engineering and other high strength 4 link suspension kits or replacement parts.
The shorter the links are, the more all of these parameters will change as the suspension moves, and the greater the chance that the suspension will start to bind up to a significant degree. Our link and coilover system lets you enjoy big articulation, 16 of vertical wheel travel and excellent steering precision and axle wrap control. Whether it is for a jeep, rock bouncer, rock crawler or even a race car the principles are the same. 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. 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.
On this episode of rock rods tech its trailing arm suspension explained by jake burkey. In fact, most offroad community forums share links to calculators that do not work or redirect you to an undesired webpage. Here is ridetechs universal triangulated 4link rear suspension system. The triangular layout of the top links resists sideways motion, and the lower links resist thrust. For anyone looking to design their own suspension, i found this suspension analyzer online and its free for 10 days, and you can print your numbers off when your done. Upper lateral link, lower reversed aarm, twin trailing links rear the classis 60s sports and racing car rear suspension.
Double triangulated 4 link design is the ultimate offroad. Triangulated 4 link rear suspension system chassis fabrication. Computer program to simulate and analyze rear suspension 4link. I too have fallen victim to the desire to build my own 4link and began doing research on how to design and construct one. Quickly change instant centers without affecting pinion angle, preload, or wheelbase. Aftermarket manufacturers make kits that retrofit an existing radius arm suspension to a parallel fourlink design and use coil springs and a track.
It will take more time and money to remove leaf springs and design, build, test, and rebuild your four link than it would to just put on a good leaf suspension, and this is if you do it yourself. I know there is a free spread sheet out there and a couple of programs guys have written, however, customers would like for me to come up with something. Trailing arm suspension explained with jake burkey rock. Binding is eliminated due to our 4link arch design. Apr 01, 2008 suspension designs three and fourlinks weve grouped these together because they are essentially identical when viewed from the side.
Portal axles or portal gear lifts are an offroad vehicle suspension and. Over the years, our industry has seen free suspension design software come and go. These systems are commonly found on vehicles used for the. Add a 4 link suspension kit to your car or truck to add performance and adjustability to your suspension. Artec industries easy 3 link kit g adjustable upper link this kit is based off our most popular parts weve sold our customers for a 3 link with panhard bar. Optimization of off road vehicle suspension system is one of the most effective. A fourlink suspension uses links to locate the axle from moving side to side and. Double triangulated rear 4link suspension kit no links, standard double triangulated rear 4link suspension kit links optional. Experience the thrill and ease of tailoring your truck or jeep with our guaranteed lowest prices on all 4link complete suspension systems and lift kits products at 4wp.
Crawlpedia is an offroad encyclopedia featuring a complete guide to 4link and. We also have a large selection of universal 4 link kits for custom projects as well as tubing, brackets, clevises, and anything else needed to construct a 4 link system of your own design. Jun 10, 2009 just a quick question for those of you in the know. The suspension selection was accomplished through the study of its geometric characteristics to design its dimensions and position of installation in the vehicle according to the expected behavior. The basics of antisquat, antidive, and roll center. A guide to tuning your fourlink suspension system posted by wayne scraba on april 23, 2015 at 2. It will take more time and money to remove leaf springs and design, build, test, and rebuild your fourlink than it would to just put on a good leaf suspension, and this is if you do it yourself.
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. Experience the thrill and ease of tailoring your truck or jeep with our guaranteed lowest prices on all 4 link complete suspension systems and lift kits products at 4wp. Compliance under load can have an important effect and must be checked using a multibody simulation software. Typical rear suspension screen, here analyzing an angled 4 link rear suspension and driveshaft movement. Our 4link kits set up your vehicle at stock ride height.
The front is a three link, while the rear is a four link with triangulated upper links. The motobilt jeep yj four link suspension kit consists of an assembly that mounts ot the frame and houses both the upper and lower links for the front and rear 4 link suspension. 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. Design of three and four link suspensions for off road use. 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.
At rock slayer offroad, we offer the first and only high performance 4link complete kit on the market there is no competition. This thesis outlines the process of designing a three link front, and four link rear suspension system. A variation on the radius arm suspension is the parallel fourlink, shown in the figure above. The kit can be used with rear coilovers and daves customs unlimited rear outboard shock tower kit or rear coil springs with our universal upper mounts and our lower coil mounts.
He continued, the ball is made out of 52100 steel with a hard chrome plate. Just a quick question for those of you in the know. This is the steering of some jeep solid axle front suspensions. The rod ends you selected were the jmx12t, which use a threepiece design along with a 3416 thread, they have a 34inch bore, and have the ptfe liner. Rustys xj competition 4link suspension system is designed specifically for racing applications. Upper lateral link, lower parallel links, twin trailing link rear a variation of the reversed lower aarm style. Enter the dimensions of your 4 link system and it will automatically calculate wheelbase change, suspension cage index angle, and shock length throughout the suspension travel. I feel a 4 link is superior to ladder bar, but more time consuming to set up. With 4link suspension, the two functions of locating the rear axle and supporting the vehicle, are isolated. I feel a 4 link is superior to ladder bar, but more time. Like all ridetech 4links, this design features rjoint rod ends. The 4 link design provides the best ride, best handling, and the most articulation and suspension travel overall. Check out the video below for a quick overview of this system and why its a musthave for any serious racer. May 31, 2009 for anyone looking to design their own suspension, i found this suspension analyzer online and its free for 10 days, and you can print your numbers off when your done.