With this calculator you will see how bump and droop can affect camber. Useful for any racing vehicle weighing 1800 4000 pounds stock car, late model, sportsman, truck, sprint, modified, hobby stock, etc. Used by many of the best teams in drag racing, chassis master is easy to set up and input information. It provides a way to isolate the chassis and driver from the shocking jolts that the. Over the years, drag racers with door cars have gone through all sorts of suspension arrangements. Typical rear suspension screen, here analyzing an angled 4 link rear suspension and driveshaft movement and u joint angles. The universal triangulated 4 link enables you to install a hightravel rear suspension using a minimum of components and custom fabrication. Previously i had begun this on another board and it got too large. I am planning to dive into a 4 link w panhard setup for my jeeps front suspension this weekend. As you drag the mouse or the scroll bar, the car moves up and down in response. Calculates all possible instant center locations plus percentage of rise and squat.
The most recent issue of racecar engineering had a note about some design and 3d modeling software for double wishbone aarm suspensions. 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. Computerized chassis setup racing software technology. Automatically recalculates instant center when changing tire size or ride height. 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 traditional way the 4 link is setup on off road rigs is to have 2 links holding. Four link coil spring live axle rear suspension fig. 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. The 2019 class is available ondemand through octane trade school. Aftermarket manufacturers make kits that retrofit an existing radius arm suspension to a parallel four link design and use coil springs and a track. Parallel 4 link rear suspension system how to build. I have used few of these programs in anger, but had a play with many of them.
Actual link bars finish color is texturedblack powder coat. Pressing the edit button immediately switches to edit mode listing more details about the dimensions of the model and allowing you to alter the model by dragging any of the tether points. They run the website, streaming, and hosting of the online service. Chris alstons chassisworks, inc chassisworks weldin. At some point you will want to enter your own suspension geometry data or even just just view the current model in more detail. A newer style that works well as an allaround type of suspension and also does great on the track. The best fourlink software for drag car or dragster chassis setup. Download 4 link suspension calculator for free windows. The angled upper links provide lateral support for the rearend housing, eliminating the need for an additional panhard bar or watts link system.
Susprog3d is the premier kinematic suspension design and analysis tool. This class is suitable for any level 4 link rear suspension. 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 click here for new plus versions features. Race tech chassis schools help provide technical analysis in a way that you can understand to apply in the shop and at the track. The software is still under development and the version provided from this page is not yet a complete product. Our allnew 4 link suspension simulation software is an amazing new setup tool for your program. Simply take 8 easy measurements with a tape measure and. Racewise rwfront front suspension geometry software. One common trick, to make the calculations easier, is to assume that the chassis rotates about a point at ground level or level with the bottom wishbone chassis pickups on the centreline of. The calculations vary from motion ratios, to spring stiffness, to wheel loads. If you are on the market for a more indepth, customizable 4 link suspension calculator, you will likely need to purchase software. There are 4 link bars mounted from the axle to the frame holding the axle in place both forward, back, and side to side.
It provides a stable platform from which to control the vehicle. This approach is now well established and will be discussed further in the next section of this chapter. Pressing the edit button immediately switches to edit mode listing more details about the dimensions of the model. Roll steer, drive angles, birdcage indexing effects, trailing arm toe, panhard devices, lift and pull bars, 6th coils, damper shocks, stacked, 2. Jerry bickels 4link wizard professional version jerry bickel race cars, in cooperation with etc, inc. I explained the geometry of triangulated fourlinks diagramatically here.
Stop guessing and start winning learn the facts of front suspension geometry with this informative cdrom computer software. Chassis master software tim mcamis performance parts. The suspension on a vehicle serves multiple purposes. Comes with a complete instruction and documentation work book. Calculate the 4link setup in any car, with any brackets in less than 15. Of all of the systems, the most common youll see today is the equal length four link, probably followed by. Universal weldon triangulated 4 link suspension kit. 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. You can also enter other measurements like wheelbase, pinion angle, etc. Lower lateral link, upper reversed aarm, twin trailing links rear a variation on. Orlandea and chase, 1977 was the use of the software to analyse suspension geometry.
For windows 7, 8 and 10 with opengl see the faq for more details faq for more details. If your car wheel stands too much, you can angle the 4 link. Funky 4 link design please note, this list is based on contributions by many people. Suspension geometry characteristics of a live axle are as follows. Finally get a handle on your instant centeric location, to help you hook up and go fast.
The flatter the top bar, the easier it is to use its pull on the chassis to plant the tire. A good suspension system is key in any type of automobile, but especially in offroad applications. Suspension geometry an overview sciencedirect topics. Vehicle travel is simulated by dragging the image with the mouse or with a scroll bar. Performance trends offers a few different options, including a free trial. There are many thick textbooks, expensive software, and hundredpage internet forums out there on the subject of 4link geometry and it is very. The suspension calculator aims to help people who are building race cars perform suspension related calculations.
Whether taking a vehicle through a slow crawl over rocks where wheel travel and articulation is very important, or through the. Along with the movement of the chassis, the front link attachment points move, and the rear ones move correspondingly. Enter the dimensions of your 4 link system and it will. Performance trends 4 link calculator demo movie saving and. Rear suspension geometry this is a software package that addressesthree link suspensions and late model four link floaterstyle. Take a look at performance trends calculators here. It is simplicity itself and a great place to start learning about suspension geometry.
Corner weights virtual scales click image to enlarge it. Suspension geometry software for purchase if you are on the market for a more indepth, customizable 4 link suspension calculator, you will likely need to purchase software. Links may be made to the site, but the product may not be redistributed in any way other than by direct download from suspensioncalculator. Now you can get all the racewise chassis school material in an easytouse software program for your home computer. Computer program to simulate and analyze rear suspension 4link setups for. The 4link calculator lets you input, view, save, analyze and compare your 4link rear suspension geometry. The angle of the top bar is the final ingredient to determining how much bite the tire will have, and for how long. Racewise provides the technical understanding of suspension. No one can predict the perfect set up, even for a spec formula where much of the suspension is fixed by the rules. The 4link calculator lets you input, view, save, analyze and compare your 4 link rear suspension geometry. Upper and lower virtual aarms, steering link front upper and lower virtual aarms, toe link rear as used on some mercedes rear. This is a 4 link suspension with all 4 links running parallel to each other. In this article well cover what we consider to be the three most important elements. 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.
There is no comparison to any other 4link software available. It includes graphs and suggestions for changes to your geometry. Space gets really tight at the front differential, and the 3 link. Upper lateral link, lower reversed aarm, twin trailing links rear the classis 60s sports and racing car rear suspension. Track all chassis information including corner weights and center of gravity. Speedwiz is the best value you will find in automotive software. Education software downloads 4 link calculator by performance trends inc and many more programs are available for instant and free download. Speedwiz has hundreds of car performance calculations, simulations, and analysis tools covering engine, suspension, chassis, dynamics, and much more. One of the most common questions we get about suspension setup and tuning is how 4link geometry affects the performance and handling of a vehicle. Software for suspension analysis automotive suspension. Please practice handwashing and social distancing, and check out our resources for adapting to these times. 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. The author shall be the sole distributor of the executable file, installation files, and any part or the entirety of the code from which the program. Covers conventional 3 link and 4 link suspensions allows bird cages on one or both.