Compliance under load can have an important effect and must be checked using a multibody simulation software. Susprog3d suspension by design is a complete software package enabling the. Dynatune suspension design module is a tool that is as completely. Cowlmounted steering boxes, however, should also be mentioned since the geometry can cause horrendous bumpsteer if there is a lot of suspension travel, though of course most rods have a minimum. This is the fifth in the video series developed for ucis racecar engineering program. There is no comparison to any other 4link software available. Discussion in the hokey ass message board started by blue. Susprog3d suspension by design suspension software. Susprog3d is a complete 3d software package for the design, setup, evaluation and visualization of.
Calculating the geometry of a single link bar is fairly straight forward, assuming that you know what the parts are called and how to use them. Feb 01, 2017 calculating the geometry of a single link bar is fairly straight forward, assuming that you know what the parts are called and how to use them. Apr 01, 2008 geometry being what it is, all suspension systems have a steering effect that is induced when one wheel is higher in relation to the chassis than the other. 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. Upper aarm, lower trailing and lateral links, toe link rear. The calculations vary from motion ratios, to spring stiffness, to wheel loads. Add a 4 link suspension kit to your car or truck to add performance and adjustability to your suspension. The front suspension geometry pro software requires the geometry to be specified by the coordinates of all the. Oct 01, 2007 cowlmounted steering boxes, however, should also be mentioned since the geometry can cause horrendous bumpsteer if there is a lot of suspension travel, though of course most rods have a minimum. Jimenez bros customs how to installl 2 link suspension. Lets throw out the most common types of suspension used so you can make choose for yourself. Page 2 of 2 suspension geometry data or even just just view the current model in more detail.
Because internet explorers maximum url length is shorter than other browsers, your project cannot be saved properly in this browser. Greatercaster,greatercasterlead % when%cornering,% z a p z v v v p p u v z v v p x d z v v p. The second effect of running the upper bars backward is completely screwed up handling dynamics. Previously i had begun this on another board and it got too large. Beven youngs home page clearance lines delivery information about us susprog3d suspension software mota 2 stroke engine software our customers say cd of. 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. The 3 link the 3 link is also just like it sounds, sort of. 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.
Multi link suspension lower aarm, 2 upper links virtual aarm, toe link. Software for auto racing and high performance cars data acquisition systems new and used engineering services and live seminars on performance and racing technology all types of tech info on racecar engines, chassis and suspension setup for road. Jimenez bros customs how to installl 2 link suspension part 2. Four link coil spring live axle rear suspension fig. At some point you will want to enter your own suspension geometry data or even just just view the current model in more detail. Analyzing chassis geometry has been a very time consuming effort. Suspension geometry definition and meaning collins english. Easy and fun to use, suspension pro will give you results immediately with no. Live axle 3 or 4 leading links panhard rod with steering for front suspension. 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. But does anyone know of a fairly cheap computer program to analyze geometry. With this calculator you will see how bump and droop can affect camber.
First off, we should take a moment to clarify that a gm style, truck trailing arm the rear suspension used in nascar is not the same design as the 2 link that is commonly used in the air. Get free shipping on racewise suspension geometry software at speedway motors. Basic suspension geometry lessons rod and custom magazine. Useful suspension analysis can be done from a bottom up approach, in which individual parts of the suspension mechanism are defined, and then loads are applied, or top down, in which the suspension is abstracted out to an overall axle performance for a given load and slip ratio, or anywhere in between these two extremes. Susprog3d is the premier kinematic suspension design and analysis tool.
The latest version of suspension analyzer is supported on pcs running windows xpvista7810, 32bit. Tune to win is similar to chassis engineering in scope but probably more indpth. Front view suspension geometry calculatorsimulator. Rear suspension design three link four link two link. This is a basic get you going tutorial, using susprog3d in either evaluation or registered mode. Its many automotive suspension calculations and suspension graphs make it easy to find out what you need to know. The vehicle ride height and pitch angle were adjusted to match the specifications used in the wind tunnel. Ultraride is a total conversion suspension that replaces a standard leaf spring suspension system. Easily and effectively create vehicle suspension designs, that can be used to help make design decisions at the initial concept stage up to and. All chassis dimensions and specifications are editable. Suspension geometry is the geometric arrangement of the parts of a suspension system, and. This allows us to specify the wheel location both laterally and longitudinally, which will then calculate the track, wheelbase and wishbone link lengths.
The classis 60s sports and racing car rear suspension. Suspension by design windows vista 32bit and 64bit, windows 7 32bit and 64bit. Im also doing an fea simulation but i can do this with the college cad software. The suspension analyzer does a complete 3d suspension analysis, including bump steer, ackerman, caster gain, anti dive, tire scrub, camber gain and much more. Jan 29, 2018 suspension geometry part 1 camber, toe, caster, kpi, scrub radius sk8215. The classic version of the suspension geometry calculator. This software is specifically designed with a userfriendly interface that makes the process of computer aided suspension design and analysis much faster and more convenient. Tilting suspension system also known as leaning suspension system is not a different type or different geometry of construction, moreover, it is a technology addition to the conventional suspension system.
The 4link calculator lets you input, view, save, analyze and compare your 4link rear suspension geometry. Autoware autoware inc front suspension geometry software. Live axle 2 leading arms panhard rod with steering for front suspension. Suspension geometry characteristics of a live axle are as follows. This kind of suspension system mainly consists of independent suspension e. As you drag the mouse or the scroll bar, the car moves up and down in response. Your software has eliminated that tiresome, mistakeprone task. Design, analysis and fabrication of rear suspension system. Geometry being what it is, all suspension systems have a steering effect that is induced when one wheel is higher in relation to the chassis than the other. The suspension calculator aims to help people who are building race cars perform suspension related calculations. Featuring a huge selection of racewise suspension geometry software in stock and ready to ship today. There are dozens of variations of suspension types used on race and passenger vehicles.
This software will work fine with a gm 4 link rear suspension. 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. Nov 08, 2018 the classic version of the suspension geometry calculator. The air suspension provides increased operator and passenger comfort, ease of access and overall safety. Software for suspension analysis automotive suspension. Speedwiz suspension pro has all the car suspension calculations and suspension simulations you need to build and modify great cars, trucks, motorcycles, and boats.
Suspension geometry part 1 camber, toe, caster, kpi, scrub radius sk8215. With a normal 4 link, when you hit the brakes, the suspension geometry wants to lift the rear of the vehicle. The 4 link calculator lets you input, view, save, analyze and compare your 4 link rear suspension geometry. Notice that the chassis input has updated, and now the y values can be input. Performance trends features engine simulation software as well as data acquisition and drag racing software, suspension software. Motospec has been designed for racing use, with a simple interface and clear outputs, to assist motorcycle tuners and race teams make quick and knowledgeable decisions. Optimumkinematics developed by optimumg engineers is a suspension and design analysis software.
A variation on the radius arm suspension is the parallel four link, shown in the figure above. Live axle or dedion 4 trailing links live axle or dedion 3 or 4 trailing links mumford linkage. Rear triangulated 4 bar bushings and geometry the h. Home forums technical information general tech link suspension basics. Transferring all of that engine torque to the rear wheels requires a good rear suspension system to handle it. Meaning, pronunciation, translations and examples log in dictionary. Calculates all possible instant center locations plus percentage of rise and squat. There is no comparison to any other 4 link software available. Suspension geometry part 1 camber, toe, caster, kpi, scrub. 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.
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. Revealing suspension geometry design methods in unique detail, john dixon shows how suspension properties such as bump steer. Id agree that if you were going to buy one book, the herb adams book would be it to start with. The portion of the vehicle weight that is supported by the suspension. The triangular layout of the top links resists sideways motion, and the lower links resist thrust. The paper focuses on design of rear suspension system for an atv. Discussion in general tech started by bbaxter51, oct 10, 2011. For windows 7, 8 and 10 with opengl see the faq for more details faq for more. Spec is software for tuning motorcycle suspension and chassis geometry.
Stop guessing and start winning learn the facts of front suspension geometry with this informative cdrom computer software. Susprog3d is a complete 3d software package for the design, setup, evaluation and visualization of race and road car suspension systems now with support for 30 different suspension types. Smitty describes the principles of suspension design. Why does a 2link rear suspension limit articulation. Open config and change from swing axle lengths to suspension link chassis mounting points. Development and analysis of a multilink suspension for racing. We are designing the front suspension, and will input data for the lh side. Used by many of the best teams in drag racing, chassis master is easy to set up and input information. It is also difficult to tune the geometry without a full 3d computer aided design analysis. This software fits the measurement data using data files arranged. Once the geometry has been set up, the paper will discuss how to measure the performance, and adjust or fine tune the setup to optimize properties such as roll axis.
This is our 2 link kit we make for 194759 chevy trucks we also carry ford and merc kits. Oct 14, 2015 suspension geometry software for purchase. Ultraride has been the chassis air suspension system of choice for manufacturers seeking to improve the ride and handling of light and medium duty vehicles. The only aftermarket link type suspension that i have come across that does not bind is a threelink using spericalheim.
It does not have any sort of recommendations for changes that should be made. It is simplicity itself and a great place to start learning about suspension geometry. Track all chassis information including corner weights and center of gravity. Along with the movement of the chassis, the front link attachment points move, and the rear ones move correspondingly. As such, it appears on your registry and it is accessed via the start menu. Vsusp no longer supports any version of internet explorer. The reason is i know software like optimumk, adams, ipg carmaker, and so on but there are expensive and too powerfull. Now you can get all the racewise chassis school material in an easytouse software program for your home computer. Design of three and four link suspensions for off road use. Racewise suspension geometry software parts speedway motors. Suspension geometry and the engine compartment were represented with a high level of accuracy. Mike mahon, mahon family racing, london ontario canada. This one is solely effected by the suspension geometry. Performance trends offers a few different options, including a free trial.
Front and rear suspension analysis simulation software program. Typical rear suspension screen, here analyzing an angled 4 link rear suspension and driveshaft movement and u joint angles. This is a basic get you going tutorial, using the registered susprog3d software. A variation on the radius arm suspension is the parallel fourlink, shown in the figure above. Design, analysis and fabrication of rear suspension system for an all terrain vehicle aniketthosar abstractall terrain vehicle atv is defined by ansi as a vehicle that travels on low pressure tires, which is used to handle any kind of terrain it faces. Racewise rwfront front suspension geometry software. Susprog3d suspension by design susprog3d suspension geometry 30 types live axle suspension types. I was able to find that in the suspension analyzer 2.
Take a look at performance trends calculators here. Racewise provides the technical understanding of suspension and tire performance that racers must have in order to make no guesswork decisions. Stop guessing and start winning learn the facts of rear suspension geometry with this informative cdrom computer software. Racewise provides the technical understanding of suspension and tire performance that racers must have in order to. 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. No one can predict the perfect set up, even for a spec formula where much of the suspension is fixed by the rules. 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. Suspension geometry an overview sciencedirect topics. Simulate rack and pinion or pitman armidler armcenter link steering systems. Vehicle travel is simulated by dragging the image with the mouse or with a scroll bar. Easy and effective virtual prototyping of vehicle suspensions. As well as creating a 3d cad model autodesk inventor prof 2012 of my chassis design i am looking to create a simulation of the suspension geometry and if possible calculate the geometry values.