The traditional way the 4 link is setup on off road rigs is to have 2 links holding. You will see a lot of useful help in the fact that you can vary 4 link tube lenght, diameter, wall thickness and material choice. You can easily design a 3 4 link to drive well down the road. Ride heights can be custom tailored to you taste during installation. Dec 26, 2015 on this episode of rock rods tech jake burkey teaches us about the dos and donts of building a double triangulated 4 link suspension.
Parallel 4 link pinion angle works 9 buy downgrade windows enterprise to pro download windows 7 free full version to usb. Vehicle travel is simulated by dragging the image with the mouse or with a scroll bar. Nov 18, 2014 morning all, i am trying to help a buddy with a stretched lj build. How to weldin a 4 link rear suspension system onto any hot rod or custom chassis. The 4 link calculator is a tool to mainly give you something to measure your suspensions performace and give you an ideah of what to change if you feel your suspension isnt reacting the way you would like. Youll need to round up a tape measure, a calculator, graph paper, and a pencil. If you are on the market for a more indepth, customizable 4 link suspension calculator, you will likely need to purchase software. Actually a lot use parallel, complain about the bind and then switch over to 3 link. Center of rear axis housing is located 18 back from the center of the fender mounting hole indicated. Please note, your computer will need excel or an equivalent to operate this template. We go into details on how to setup a parallel 4 link drag suspension. The parallel link is not compatible with the tigraph link cable or tigraph link software, and requires compatible thirdparty link software. Oct 14, 2015 click here to view these 4x4 calculators. Roll center height for 4link automotive suspension.
Four heavy duty 24 steel bars four zinc plated steel rod ends w urethane bushings two steel, weldon axle mounts two steel, weldon fame mounts four steel, weldon center link axle mounts ten hex head bolts with nyloc nuts. Keep in mind that using a suspension calculator does not guarantee a perfect installation, but it will surely help you find a starting point and make effective adjustments. Apr 30, 2009 computer program to measure cam camshaft profiles by hand, or analyze graph and report several various computerized cam file formats. In the case of a suspension with parallel links the roll axis line is simply going to. This cross member is not held in place by the transfer case skid plate. 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.
Once ordered we will work with you on getting the right dimensions to build your system. Download 4 link suspension calculator for free windows. You need the panhard bar to be parallel with the drag link and as close to the same length as possible. We show you the pros and cons and how to make it work right. The third calculator will find a resistor value to place in parallel with a given resistor value to produce a specified total. A panhard bar or other separate device is required to keep. The parallel 4 link is also slightly easier for the casual installer to visualize and install because there are fewer bar mounts to deal with. After some research, we found a good and reliable suspension calculator that provides 4 link including. If you are dealing w this type of matter on a regular basis, you should probably look into buying a copy of racecar vehicle dynamics by bill and doug. This is your link bending w 12 the vehicle weight on it rear axle ratio rear track width created 2004. As you drag the mouse or the scroll bar, the car moves up and down in response. Electronics 2000 series parallel resistor calculator.
Downloads install parallels desktop, transporter agent. Downloading the tool starting on 11 april 2007 ibm has introduced a new method for customers to register for and download the sysplex calculator plexcalc tool. Aug 14, 2009 if you are going to use a 4 bar, with the bars of equal length and truly parallel to one another, you need only consider the change in wheelbase. If you spend a little time noodling with 4 link wizard or several other. Universal parallel 4 links are therefore sometimes easier to install because the main link bars utilize a onepiece frame mount instead of two less time in placing and welding the upper bar mounts. Typically, indexing causes the coilover mounts, if located on the. Tuning 4 link rear suspensions can make a car launch quicker and use less horsepower to do it. Department of mechanical engineering, union college advisor. Which makes you faster, so you win, get famous, and live happy ever after. I would rather do a 3 link in the front for steering reasons and i would use coil overs with a stiffer spring rate to help with stability around corners. This setup if the easiest for people to understand and wrap their heads around the concept of. Universal 4link plotter digital download quartermax. Jerry bickels 4link wizard professional version jerry bickel race cars, in cooperation with etc, inc.
Please fill out our nonstockspecial order form and well get right back to you. Attached is my current setup from the 4 link calculator program, with dave morgans suggestions, for a 3200 lb car, marked in green. Uppers 31 long, 2 above the frame so 4 of vertical and 4 of horizontal between upper and lower at the. This article is about expanding way many of us look at four link tuning. The upper links are usually shorter than the bottom links, so this design displays more pinion angle excursion then would a 4 bar. A 4 links is a great way to upgrade your cars performance and ride quality especially when compared to leaf springs. Conversely, with a parallel style 4link, all bars are parallel to each other and the vehicle centerline. Triangulated 4 link calculator adobe photoshop cs5 extended trial net framework sp1 windows 7 download inexpensive ms office 2010. Crawlpedia is an offroad encyclopedia featuring a complete guide to 4link and. If you need the upper bars to be appreciably shorter than the lowers, you will also need to factor in pinion angle variation. It works well as an allaround type of suspension and especially well for the drag strip. Putting a triangulated 4 link under your car or truck is one the best upgrades you can make.
The parallel bar design works very well for all applications. If you are worried about length and uppers not being triangulated enough, just run a parallel 4 link and rig up a panhard bar to hold the axle in place. The first step in either building a 4 link suspension or troubleshooting an existing suspension is to download one of these triaged calculators created by dan barcroft and plug in the dimensions and weights it asks for. Topics covered will be axle alignment, pinion and preload adjustment, instant center and the neutral line and how it all works. The point along the roll axis that is directly above the axle center line is the roll center. A triangulated 4 link has inherent design flaws as the pinion angle changes as the suspension travels up and down, which can lead to poor cornering, especially on uneven. Right to left motion is constrained by the triangulation of the 4 link. Triangulated 4link rear suspension street rod engineering. 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. These systems are commonly found on vehicles used for the sport of rock. If you are in the midst of a suspension install and need some pointers, take a look at our installation tips for 3 link and 4 link suspensions. In the case of a suspension with parallel links the roll axis line is simply going to be parallel with the parallel links.
Calculate the 4link setup in any car, with any brackets in less than 15 minutes. How to install rear 4link suspension for air ride and. Summit racing has everything you need to build the triangulated or parallel 4 link suspension setup you want. Over the years, our industry has seen free suspension design software come and go. Four link bar kits, adjustable 4link brackets, housing plates, 4link bolt kits and more. We can make a triangulated 4 link to the specifications of your frame and chosen rear end. The bars are made from high quality seamless dom tubing and have a 732 wall thickness. Please practice handwashing and social distancing, and check out our resources for adapting to these times. Double triangulated 4 link design eliminates the need for a rear trac bar, allowing you to stretch the rear axle back. A newer style that works well as an allaround type of suspension and also does great on the track.
Davis, benjamin design of three and four link suspensions for off road motorsports. I would really run a parallel style 4 link with a panhard bar. Performance trends 4 link calculator demo movie saving and. Calculate the 4 link setup in any car, with any brackets in less than 15 minutes with this easy to use quartermax universal 4 link plotter. 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. As a test, if you input resistances of 3, 9 and 18 ohms, your answer should be 2 ohms. Design of three and four link suspensions for off road use. It will take some time sitting under your rig seeing what you have to work with and playing on the 3 4 link calculator. The bars are super thick and built like a brick poop house. This is a 4 link suspension with all 4 links running parallel to each other. A 4 link birdcage rotates or indexes on the axle tube whenever the suspension moves unless both upper and lower links are equal in length and parallel to each other. Before you install your offroad suspension parts, access a link calculator. With parallels desktop for mac, you can seamlessly run both windows and macos applications sidebyside without rebooting. Simply take 8 easy measurements with a tape measure and input them into the universal plotter to find the instant center of the 4 link location.
Although there are several theories as to which type of 4 link is better, it comes down to available space and preference. This fully adjustable parallel 4 link kit is crazy. The position of the bars matter significantly for reasons other than just the antisquat geometryside view instant centre vs anti squat line. In straight up and down travel, a 4 link moves only vertically, and rotates slightly front to back depending on if the links are the same length or not. Ive been all over many sites to find a spaghetti mess of links all pointing to the same 4 programs that are no longer there. Lower bars mount just as described above, either directly under the frame rail or outside of it. I used to have an old dos based package when i was into drag racing but cant get it to run in win7 or my xp vms. Been trying to find the 3 link calculator but the one in the faq didnt work for me. There are 4 link bars mounted from the axle to the frame holding the axle in place both forward, back, and side to side. This kind of suspension always has some kind of panhard bar to keep the axle centered. The 4 link calculator lets you input, view, save, analyze and compare your 4 link rear suspension geometry. This 19601965 ford falcon triangulated 4 link kit eliminates bind common with parallel 4 link bars by angling the upper link bars inward. Right now, such software supports all ti graphing calculator models, but only under windows limited amiga, dos, and linux support is available.
If you use 2 lower links and 1 top one the car rolls. Education software downloads 4 link calculator by performance trends inc and many more programs are available for instant and free download. Whether it is for a jeep, rock bouncer, rock crawler or even a. With a parallel 4 link you are locked into a sideframe link position. The new method takes advantage of the standard ibm tools downloading process which uses the ibm. Welcome to the 4link calculator types of linkage ends bore, width, and thread attachment method almost ready. Discussion in general tech started by bbaxter51, oct 10, 2011. Computer program to measure cam camshaft profiles by hand, or analyze graph and report several various computerized cam file formats. There are 3 height adjustments on the axle brackets in one inch increments. The pinion angle does not change throughout the travel of the suspension, unlike a triangulated 4 link system. David hodgson this thesis outlines the process of designing a three link front, and four link rear suspension system. 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.
If you are running coilovers and have the room they can be mounted vertically outside of the rails as well. Enter resistances into the boxes below and when all values have been input, click on the calculate button and the result will appear in the box below that button. The book also describes the procedure for finding the roll center of a 4 link w two sets of triangulated links yours is considered somewhat special bc one of the pair of links is parallel. 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. You will spend more time with the tape measure than the saw or welder. This calculator can determine the resistance of up to 10 resistors in parallel.
This front forged four link upgrade kit has been specifically designed for your 4wd 20172018 ford f250f350 dually, and is an excellent way to upgrade any 46 lift kit. 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. Parallel 4 link, microsoft publisher 20 update, install autocad land desktop 2009, altium designer 10 download. 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. This program was written for guys designing off road or rock climbing systems but the design math is the same. Along with the movement of the chassis, the front link attachment points move, and the rear ones move correspondingly. Where can i find a 4 link calculator that still works. Parallels desktop for mac is simply the worlds bestselling, toprated, and most trusted solution for running windows applications on your mac. Sysplex calculator plexcalc zsl03523usen00 sysplex calculator. We also have a large selection of universal 4link kits for custom projects as well as tubing, brackets, clevises, and anything else needed to construct a 4 link system of your own design. Preferred resistor values are also calculated, use the radio buttons on each calculator to select the preferred value series to use.
Home diy projects how to install rear 4link suspension for air ride and coilovers. Indexing is greatest when there is a lot of length andor angle difference in the upper and lower links. Rear four link kits rear suspension suspension parts. A parallel 4 link fits most trucks better because the fuel tank is usually right in front of the axle, inboard of the frame. Coilover parallel 4 link kit wshocks, upper crossmember 337mm shocks 250300lb.
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. Notice there are no ic points, in the suggestions box, below the neutral line. The frame mounting brackets are laser cut from 516 thick steel plate. Ridetech offers the 4 link rear suspension in a parallel style very similar in construction to the tri link rjoints heavy tubing lasercut bracketry but the parallel 4 link uses a panhard bar to position the rear axle side to side in many applications such as late model trucks this configuration.
A fourlink suspension uses links to locate the axle from moving side to side and front to. Triangulated 4 links and parallel 4 links accomplish the same thing. The 4link calculator lets you input, view, save, analyze and compare your 4 link rear suspension geometry. A parallel is sometimes easier to install because the link bar frame mount is one piece instead of two. This mount is universal and can be cut or trimmed to be mounted in any position on any jeep tj, lj, yj or cj. So changed the lower link to be parallel and then assumed there would be around 5.
Universal rear weldon parallel 4 link suspension kits. 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. Tci engineering 19601965 ford falcon triangulated 4link. You also have the ability to fine tune the ride height further with the adjustable coilovers. Professional level 4link suspension system kits, components and accessories for drag racing vehicles. The point along the roll axis that is directly above the axle center line is. The 4 link calculator allows you to design, cost, and order complete linkages of multiple different styles, length, sizes and configurations. In this video, a ridetech 4 link kit is adapted to a 1948 ford pickup truck, but the process is very similar for most. The threads inside the bars are cnc cut on a lathe. Again, the theoretical intersection point, or instant center is often all we pay attention to even though testing has shown that the holes we select is almost as important as the ic itself. Resistor calculator software free download resistor calculator top 4 download offers free software downloads for windows, mac, ios and android computers and mobile devices. In fact, most offroad community forums share links to calculators that do not work or redirect you to an undesired webpage.
It will show you pinion angle change as you bump the axle height. The parallel 4 link kit is very easy to install and is a good choice for many installations. He is planning to go with a double triangulated 4 link. Push the uppers apart 6 on the axle end and i also lowered my vehicle cg to 27. Resistor calculator software free download resistor. The only point at which it does not is when it is perfectly level parallel to the axle basically.
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