It will utilize a speedway motors gcomp watts link to keep the rear end right where it needs to be, and adjustable coilovers. I mentioned earlier that none of the cars in this book. Krawlers edges custom 4 link system, named quad link, creates superior ride quality in your early bronco. Were still here and shipping orderslets build it together.
Lastly build strong brackets, especially at the chassis and convergence of the tri link or wishbone. Finding and restoring old cars, along with modifying existing frames and body styles to create custom vehicles, is a passion for many. Rear suspension design three link four link two link. 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. In almost all racing aplications the top bar is pointed down to establish the instant center for best accelerating behavior. 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. If you are someone who has been struck by the bug, there are a variety of avenues you can. A four link suspension kit will optimize the performance and overall ride quality of your rig by balancing triangulation, increasing the force of power, and giving you maximum control installation tips for adding a four link suspension. Heavy duty rod ends are a must on any 4 link that will take right pedal abuse. Though some of these books are pretty heavy, they do help explain the theories behind fourlink suspensions, but mostly when applied to street cars and not off.
I have a art morrison 4 link and i am wrapping up a swap to watts link from pan hard bar. A 4 link system separates the functions of positioning the axle and supporting the vehicle. Summit racing has everything you need to build the triangulated or parallel 4 link suspension setup you want. In addition there are many excellent books available to learn more about suspension design. This is a 4 link suspension with the two upper links angled in toward the differential. Helix 9240 trifive triangulated 4 link kit with hardware. Need help on building a 4 links suspension from scratch. May 14, 2014 need help on building a 4 links suspension from scratch posted by plymouth71 on wednesday, may 14, 2014 11. According to suspension theory that car should be very wheel stand prone, because the point of actual instant center is far forward in front of the car and is also below the theoretical line of instant center. The suspension looks to be well thought out and executed, i am not criticizing johnnys work. I know you are familiar with the mki lotus cortinas coil over rear suspension in 1980, i reworked a 3 link plus panhard that had been fabricated by.
Apr 01, 2008 on any rear suspension system assuming it is a fullforward system, even a two link, moving the ic higher will produce a higher percentage of antisquat, making the truck not squat as much during. Front suspension technology link basics part 2 offroad. Tuning 4 link rear suspensions can make a car launch quicker and use less horsepower to do it. How to install rear 4link suspension for air ride and. Tci 3540 ford 4 link rear suspension kit with coil overs. So i have the car jacked up and the body supported. 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. However, keep in mind that chassis roll causes the link angles to change. Jul, 2018 rear 4 link suspension on the suburban reckless wrench garage duration. Quad link, with our custom coil springs, creates a better ride quality for the short wheel base on the early bronco. This build is the polar opposite, and although our moser m9 fabricated rearend is going in a mopar, the only thing that stays true to mopar is the wheel bolt pattern. With precision welds and durable steel construction, helix early ford 4 link frame mount bracket is a sure fit for any vintage 19281948 ford with a four link system. Last month we started an indepth look at the benefits and detriments of a four link suspension. The quartermax 4link kit can be used in most sportsman and streetstrip applications.
Universal rear weldon parallel 4 link suspension kits. The triangular layout of the top links resists sideways motion, and the lower links resist thrust. 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. Design of three and four link suspensions for off road use. This created a blank slate and allowed me to design my own adjustable 3 link rear suspension. 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. Before you install your offroad suspension parts, access a link calculator. Understanding suspension types, geometry and the effect of each component is key to ensuring the maximum tire contact patch remains on the road at all times. Frontmounted 4 linkrod connection high performance suspension conditioning.
How to choose a custom suspension, building a double triangulated 4 link, plus rock racing from jellico, tn. For the more challenging projects we offer blueprints and detailed instructions to help the backyard builder. Stateoftheart 4 link suspension kits we offer on our website are the superior alternative to the inherent performance limitations of your leaf springs. Tci 2836 chevy 4 link rear suspension kit with coil overs. A guide to tuning your fourlink suspension system posted by wayne scraba on april 23, 2015 at 2. Trs magazine welding brackets on your trucks frame. This is the source for tech tips, blue prints, drawings and plans for the do it yourself automotive hobbyist. An indepth technical look at fourlink truck suspensions from design to a full suspension installation 4 wheel and offroad. Well again provide a solid introduction and refer you to these books for even greater technical detail.
By reading this book you will discover all the proven methods on. Springs take care of supporting the vehicle which leaves the links free to deal with locating and articulation. Instead of adding bracing here and there, i decided to go all out and build a complete custom frame for the car. Puting a 4 link on a unibody automotive suspension. The three link suspension in figure 4 three link front left and four link rear right. This style of suspension works well for an everyday driver and also works well in cornering on a track. Found nothing useful in this book that a 10 year offroad veteran didnt already knew. The 4 link calculator lets you input, view, save, analyze and compare your 4 link rear suspension geometry. Set your 4 link rear suspenstion right for ultimate speed and bite. I ran the rear end up and down with the floor jack vertically, checking for binding or clearnce issues, all good. Quadlink a 4link system for early broncos krawlers edge. Each frame is completely jigwelded to assure straightness and proper alignment of suspension mounting points.
Part 6 in our series of tutorial videos that explain how to set up your rear suspension takes a look at basic 4link set up and adjustments. The triangulated 4 links hold the axle in place and you dont need a panhard bar. Competition engineering c2017 standard series 4 link kit. The angled upper links hold the axle in place side to side, so a panhard bar is not needed. 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. May 09, 2019 when building your 4link bars or any other type of adjustable links you want to have them in the middle of the adjustment range so you can have enough adjustment to set up your suspension. A three link suspension functions very much like a parallel four link, but it can run high antisquat settings and short svsa lengths without incurring additional binding. 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. Suspension link kits universal free shipping on orders. Tci 2831 model a ford basic 4 link rear suspension kit. Like the front system, the vertical separation of the links resists the drive and braking torsion. Sep 01, 2009 front suspension technology link basics part 2. How to build a diy 3 link suspension speedway motors. Drag race 4link suspensions chris alstons chassisworks.
Triangulated 4 link rear suspension system howtobuild. When building your 4link bars or any other type of adjustable links you want to have them in the middle of the adjustment range so you can have enough adjustment to set up your suspension. Installing 4 link suspension 1937 rat rod build update 12 duration. Set your 4link rear suspenstion right for ultimate speed and bite.
Kit is designed specifically for the doityour selfer. By locating the bars with the various mounting holes in the brackets, you can create an instant center that is correct for your application. 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. When we decided to upgrade our suspension to a four link setup with qa1 doubleadjustable coilovers, we took it a step further than just welding on some brackets. We use the upper links on a 4link suspension to enhance the forward bite. Regardless of the type of vehicle you are building we have the products and free information that will save you time and money. Mar 01, 2007 last month we started an indepth look at the benefits and detriments of a four link suspension.
Installing a four link kit just got easy with this deluxe kit that includes the four link bars, brackets, upper shock mount, coilover shocks, and springs. There are entire books dedicated to the subject, and this paper is intended. Story by jim oaks one of the hottest trends on serious offroad rigs now is triangulated 4link suspensions. You need at least 45% of the cars weight on the rear wheels to make a 4 link suspension work properly. From a practical standpoint, its hard to have links that are too long.
Upper link angles from 15 to 18 on the right and 10 to 15 on the left provide good forward bite. The major benefit of a leafspring suspension over a four link is cost and maintenance. Ok guys, here is my issue, prolly has more to do with body roll than the 4 link. With 4 link suspension, the two functions of locating the rear axle and supporting the vehicle, are isolated. How to information on installing a rear 4 link frame clip. On any rear suspension system assuming it is a fullforward system, even a two link, moving the ic higher will produce a higher percentage of antisquat, making the truck not squat as much during. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on youtube. We touched on how a four link will reduce the number of variables down to just the spring rate and. How to information on installing a rear 4 link frame clip for beginners.
Buy universal rear weldon parallel 4 link suspension kits. While the internet does provide some insights, the best and most complete information is available in a number of excellent books on suspensions. We use the upper links on a 4 link suspension to enhance the forward bite. A 4link suspension system is commonly used to replace leaf springs and shocks in vehicles to provide much greater stability while. Building custom cars is a hobby that has grown over the years into a worldwide phenomenon. This is by no means the be all end oll of building a link suspension i probably left out a ton of stuff. Thinking of building a four link set up nice pictures johnny, now tyler these pics are a good example of a typical custom 4 link suspension and how much you will be modifying your jeep. Look at a lot of different suspensions and you will get a good idea.
I gave examples above where 8mm works for locost book build and 20mm works for mine. On this episode of rock rods tech jake burkey teaches us about the dos and donts of building a double triangulated 4 link suspension. In this video, a ridetech 4 link kit is adapted to a 1948 ford pickup truck, but the process is very similar for most applications. Add a 4 link suspension kit to your car or truck to add performance and adjustability to your suspension. The s w race cars fullywelded chevy s10 rear frame. Need help on building a 4 links suspension from scratch posted by plymouth71 on wednesday, may 14, 2014 11. Choose from jegs, competition engineering and other high strength 4 link suspension kits or replacement parts. A variation on the radius arm suspension is the parallel four link, shown in the figure above. Rear 4 link suspension on the suburban reckless wrench garage duration.
Drag race four link suspension use spherical rod ends for strength and extreme adjustability. A good starting point for both links is 15 upwards to the front. Helix suspension brakes and steering hexttk2ed2c5 sku. Helix suspension brakes and steering hexttk2ece18 sku. How to weldin a 4 link rear suspension system onto any hot rod or custom chassis. Puting a 4 link on a unibody puting a 4 link on a unibody. How to install rear 4link suspension for air ride and coilovers. Suspension 101 rock racing how to choose a custom suspension, building a double triangulated 4 link, plus rock racing from jellico, tn. Which makes you faster, so you win, get famous, and live happy ever after.
Tci 3540 ford air spring 4 link rear suspension kit. The basics of antisquat, antidive, and roll center. Like any link suspension, the pivots must be free to move without binding on a three link. I too have fallen victim to the desire to build my own 4link and began doing research on how to design and construct one. 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. Installation tips for adding a four link suspension. This is a stronger upgrade that comes standard in our kits, vs most kits on the market that only have 1 direct tap tubes. If you however are building a one off rig, oh lets say with rockwell axles, nitro shocks, a 4link setup with 6 foot tall tractor tires, and all you wanted was basic suspension design, setup, so on and so forth, this book is not for you. Suspension components, front suspension components, rear suspension systems, rear 4link suspension drag race sportsman 4 link crossmember sportsman 4 link for chassis pro 4 link level 1 pro 4 link level 2 4 link suspension pro street ladder bar suspension pro street ladder bar suspension. Jul 06, 2015 a four link suspension kit will optimize the performance and overall ride quality of your rig by balancing triangulation, increasing the force of power, and giving you maximum control. 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.