Actual linkbars finish color is texturedblack powder coat. Suspension geometry an overview sciencedirect topics. The angle of the top bar is the final ingredient to determining how much bite the tire will have, and for how long. 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.
Chassis master is easy to set up and calculates all possible ic locations, rise, squat, corner weights, center of gravity and even automatically adjust to changes in ride height or tire size. The most popular version among the software users is 2. Actual link bars finish color is texturedblack powder coat. I have been playing with the 4link wizard a little bit, and am very impressed. Engineered with strength and rigidity to handle todays higher horsepower engines. The installation mostly requires drilling and bolting in components except for welding the 4 tabs on top of your axle housing for the upper link bars. 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. Antipitch is the name given to a suspension geometry, front and rear that prevents pitch under braking. According to the book, chassis engineering, by herb adams, the angles affect the antisquat and roll center. Wheel camber is zero irrespective if the vehicle is stationary or moving round a bend in the road.
There are two lower links and one upper, mostly parallel in the top view with the upper link offset to one side. Position rear end housing in place with 4 of clearance between top of axle tubes and bottom. It is simplicity itself and a great place to start learning about suspension geometry. Susprog3d is a complete 3d software package for the design, setup, evaluation and. Installation instructions 19551957 chevy triangulated 4link. This is a rear suspension comparison of geometry control and 4 wheel steering, opel and its competitors.
Download 4 link suspension calculator for free windows. The universal triangulated 4link enables you to install a hightravel rear suspension using a minimum of components and custom fabrication. Autoware autoware inc rear suspension geometry software. Rear triangulated 4 bar bushings and geometry the h. Jerry bickel race cars gives racers the technology to win. From literature we know that our competitors improve turning. No part of the program or code shall be reproduced for commercial use. If you are on the market for a more indepth, customizable 4 link suspension calculator, you will likely need to purchase software. Tcis triangulated 4 link rear suspension allows a lower stance for better handling and greater axle control. As you drag the mouse or the scroll bar, the car moves up and down in response. Jerry bickels 4link wizard professional version jerry bickel race cars, in cooperation with etc, inc. Performance trends 4 link calculator demo movie saving and. Im doing a chassis design project for my major project in my degree 2nd year. 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 article well cover what we consider to be the three most important elements. It makes sense, since this is the bar that also dictates the ic once the rest of the parameters are set. Computer program to simulate and analyze rear suspension 4link setups for. There is no comparison to any other 4 link software. Track all chassis information including corner weights and center of gravity.
Universal 4link plotter digital download quartermax. This is extremely important in order to maintain proper suspension geometry. Pressing the edit button immediately switches to edit mode listing more details about the dimensions of the model and allowing you to. Basically, where a line drawn through the arms intersects towards the front, so the arms need to be parallel, or closer at the front, side view, determines the antisquat, the higher off the ground, the more antisquat.
A newer style that works well as an allaround type of suspension and also does great on the track. A variation on the radius arm suspension is the parallel four link, shown in the figure above. Education software downloads 4 link calculator by performance trends inc and many more programs are available for instant and free download. I have been playing with the 4 link wizard a little bit, and am very impressed. Susprog3d is the premier kinematic suspension design and analysis tool. Tcis triangulated 4link rear suspension allows a lower stance for better handling and greater axle control. Autoware autoware inc front suspension geometry software. Chris alstons chassisworks, inc chassisworks weldin. Calculate the 4link setup in any car, with any brackets in less than 15. Suspension types tutorials downloads data files faq purchase here contact us basic suspension geometry this is a basic get you going tutorial, using susprog3d in. Heavy duty rod ends are a must on any 4 link that will take right pedal abuse. 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. These unwanted characteristics are caused by incorrect 4link geometry and they. The calculations vary from motion ratios, to spring stiffness, to wheel loads.
Suspension geometry characteristics of a live axle are as follows 1. Chassis master software tim mcamis performance parts. 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. Double triangulated 4 link crossmember kit genright jeep parts. Apr 30, 2009 suspension geometry part 2 roll center. Please let us know what you think about this product by taking our short survey here. However, if you can provide me us with your 3df file i am sure that one of us will be able to solve your problem.
Funky 4 link design please note, this list is based on contributions by many people. Take a look at performance trends calculators here. In addition to all the geometry of designing a fourlink there is also the problem of what will actually fit on the vehicle you are building. This is a 4 link suspension with all 4 links running parallel to each other. The 4link calculator lets you input, view, save, analyze and compare your 4link rear suspension geometry. 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. You can find it by simply projecting lines along suspension members to a point of intersection for example, the respective bars of a fourlink. Oct 14, 2015 suspension geometry software for purchase. The universal 4 link plotter will work on any 4 link brackets both standard and adjustable. If it were me, id copy the geometry from a 7888 gbody, they are everywhere and perform well on the street, circle track, and drag strip. You enter measurements for all 4 brackets for your car, or any number of cars. Mike mahon, mahon family racing, london ontario canada. The 4 link calculator lets you input, view, save, analyze and compare your 4 link rear suspension geometry.
Vehicle travel is simulated by dragging the image with the mouse or with a scroll bar. Choose from jegs, competition engineering and other high strength 4 link suspension kits or replacement parts. The popularity of the 4 link suspension is due primarily to its ability to let the race car turn freely in the middle of the corner without compromising forward bite. Alot of the competiton rock crawlers are using a 3 link and panhard bar set up now instead of the trianulated 4 link. On this episode of rock rods tech jake burkey teaches us about the dos and donts of building a double triangulated 4 link. There is no comparison to any other 4link software available. The angled upper links provide lateral support for the rearend housing, eliminating the need for an additional panhard bar or watts link system. A newer style that has come stock in many vehicles and that works well as an allaround type of suspension. I have used few of these programs in anger, but had a play with many of them. Add a 4 link suspension kit to your car or truck to add performance and adjustability to your suspension. We have figured out all the mounting points to optimize suspension geometry weight transfer, minimal rear steer and proper amount of antisquat for you, while. Apr 23, 2015 you can find it by simply projecting lines along suspension members to a point of intersection for example, the respective bars of a four link. Performance trends offers a few different options, including a free trial. The two opel systems optimize the suspension geometry with regard to braking stability, total car steer and lateral accele r at ion.
Software for suspension analysis automotive suspension. The universal triangulated 4 link enables you to install a hightravel rear suspension using a minimum of components and custom fabrication. There is no comparison to any other 4 link software available. Once the lower crossmember and the triangulated frame mounts are in place and while the suspension is. Calculates all possible instant center locations plus percentage of rise and squat.
For most truck owners an allaround fourlink is the desire, but that will not necessarily be the best rockcrawler, desert jumper, and mud bogger suspension. The angled upper links hold the axle in place side to side, so a panhard bar is not needed. Along with the movement of the chassis, the front link attachment points move, and the rear ones move correspondingly. To understand how a 4 link can be made to provide such handling, you must first understand a few basics about rear suspensions. 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. Oct 26, 2017 i have not modeled a 4 link suspension with fusion360 as i rarely use this geometry for the type of cars we design. Ultraride is a total conversion suspension that replaces a standard leaf spring suspension system. The 4 link calculator allows you to design, cost, and order complete linkages of multiple different styles, length, sizes and configurations. This is an example of a typical 4 link setup in the rear of a rig. This is a 4 link suspension with the two upper links angled in toward the differential. This program is provided free of charge for personal use in the assisting of suspension calculations. Speedway style rear suspension, using a winters torque tube axle, 4 links, birdcages and jacobs ladder. Program software may be freely downloaded on any number of computers, but to activate software requires the purchase of a separate activation codes unique to each computer. 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.
The air suspension provides increased operator and passenger comfort, ease of access. Used by many of the best teams in drag racing, chassis master is easy to set up and input information. 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. The flatter the top bar, the easier it is to use its pull on the chassis to plant the tire. The 4link calculator lets you input, view, save, analyze and compare your 4 link rear suspension geometry. A variation on the radius arm suspension is the parallel fourlink, shown in the figure above. The universal 4link plotter will work on any 4link brackets both standard and adjustable. This is the genright off road design double triangulated 4 link cross member only kit for a jeep tj or yj. This kind of suspension always has some kind of panhard bar to keep the axle centered. If one wheel moves over a hump or dip in the road then the axle will tilt causing both wheels to become cambered. I have not modeled a 4link suspension with fusion360 as i rarely use this geometry for the type of cars we design. 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. Where they intersect is called the instant center see illustration 4 below.
Your software has eliminated that tiresome, mistakeprone task. The suspension analyzer does a complete 3d suspension analysis, including bump steer, ackerman, caster gain, anti dive, tire scrub, camber gain and much more. With frame leveled side to side and sitting at the rake if any front to rear that it will be finished, locate rear axle centerline and mark on frame rail sides. For the best selection of 4 link suspension and rear racing suspensions look no further than jerry bickel race cars. The suspension calculator aims to help people who are building race cars perform suspension related calculations. Suspension types tutorials downloads data files faq purchase here contact us basic suspension geometry this is a basic get you going tutorial, using susprog3d in either evaluation or registered mode. Analyzing chassis geometry has been a very time consuming effort. At some point you will want to enter your own suspension geometry data or even just just view the current model in more detail. Design of three and four link suspensions for off road use. 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.
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