It is simplicity itself and a great place to start learning about suspension geometry. As a base point, in order to calculate the standard suspension geometry accurately, i used chris gibb. Real suspension design packages are too expensive for normal people to buy. Suspension geometry and the engine compartment were represented with a high level of accuracy. Links may be made to the site, but the product may not be redistributed in any way other than by direct download from. The latest version of suspension analyzer is supported on pcs running windows xpvista7810, 32bit. Software for suspension design automotive suspension. Newer commercial software has kinematic features built in that simulate road conditions. All chassis dimensions and specifications are editable. 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. Smitty describes the principles of suspension design.
Racewise provides the technical understanding of suspension and tire performance that racers must have in order to make no guesswork decisions regarding chassis setup, handling analysis and adjustments. Optimumkinematics developed by optimumg engineers is a suspension and design analysis software. This screen shot shows a double a arm system, but the software also works with strut suspensions. The chassis movement control allows you to raise and lower the chassis and also rotate the chassis by moving the mouse or your finger side to side. Suspension design software is invaluable in car or truck design as it does the heavy lifting when it comes to the many iterations of manual calculation that are usually. Car design tools for chassis, suspension, aerodynamics.
From creating an accurate model of the car and every nut and bolt in it in 3d, to the design and simulation of critical aspects such as the chassis and suspension, software programs have become commonplace to amateur car design. Allows steer, roll and bump or rebound suspension movements. As such, it appears on your registry and it is accessed via the start menu. If you are only interested in double wishbone geometry then the free and excellent cosine. The suspension travel analysis allows you to see what happens to the suspension during travel. No part of the program or code shall be reproduced for commercial use. Assuming you dont want to redo the suspension installation you can either raise the ride height to correct the suspension geometry and live with that, or, raise the ride height and and switch to lowered spindles to. From this i could generate drawings to suit the mcsorley 442 dimensions. Spring rates, preload, top out springs, steering geometry, cg position, antisquat and many other parameters are input or calculated. Roll center calculator this is a simple twodimensional front suspension layout program. The options for entering your geometry specs include. Performance trends features engine simulation software as well as data acquisition and drag racing software, suspension software, race car software, dynamometer software. Download pdf suspension geometry and computation book full free. Some suspension design software packages provide 3d visualization of suspension geometry and movement, and enable the designer to change pickup points and other points in space before reanalyzing the design.
Calculate and compare the geometry setup of 5 motorcycles. 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. Nov 08, 2018 the classic version of the suspension geometry calculator. Front suspension geometry pro incredible, amazing and astonishing, you have to see it to believe it. Design of three and four link suspensions for off road use. Racewise provides the technical understanding of suspension and tire performance that racers must have in order to make no guesswork decisions. Our weight transfer worksheet is explained in detail. Autoware autoware inc front suspension geometry software. Suspension calculations include coil and leaf springs, antiroll bars, animated suspension geometry analysis with roll center and instant center for dual aarm and strut suspensions. Auto suspension design made easy lotus engineering suspension analysis lsa, the commercial version of software from lotus engineering in the u.
Supact motorcycle geometry software is developed in a racing environment. Now you can get all the racewise chassis school material in an easytouse software program for your home computer. What is the best free cad software for racecar engineering. Easily and effectively create vehicle suspension designs, that can be used to help make design decisions at the initial concept stage up to and including det. Yes, we are that busy, but we want to help with your project too. Not have sufficient suspension travel or free movement suspension must have no binding. Motorcycle setup software motochassis by tony foale. The full installation zipped folder is a zipped folder, which has to be unzipped and installed. Finding your center finding your front and rear roll center. Analyze parameters that effect steering and handling of the motorcycle. 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. The free nanocad allows for easy geometry creation and dwg dxf imports. Jul 23, 2017 smitty describes the principles of suspension design.
Itcalculates roll center position, camber change, and wheel rates. Rear suspension geometry is your car loose and cross weight nor springs will fix the problem. Apr 19, 2005 it includes graphs and suggestions for changes to your geometry. The roll center calculator lets you input, view, save, analyze and compare either double a frame or mcpherson strut front suspension geometry. Suspension geometry and computation available for download and read online in other formats. The use of the software served as a valuable tool in the selection of the proper metal alloy, and the geometry of each part.
Motorcycle setup software for optimizing the suspension system and whole bike kinematics. Design of formula sae suspension theory in practice. Performance trends features engine simulation software as well as data acquisition and drag racing software, suspension software, race car software, dynamometer. Racewise rwfront front suspension geometry software.
Around 1990, a racing friend contacted me to analyze the suspension geometry on a car he had acquired. The vehicle ride height and pitch angle were adjusted to match the specifications used in the wind tunnel. At some point you will want to enter your own suspension geometry data or even just just view the current model in more detail. Suspension geometry an overview sciencedirect topics.
Front and rear suspension analysis simulation software program. Stop guessing and start winning learn the facts of rear suspension geometry with this informative cdrom computer software. These systems are commonly found on vehicles used for the sport of rock crawling, or for recreational use on unmaintained roads. Lotus engineering suspension analysis lsa, the commercial version of software from lotus engineering in the u. Suspension travel and spring stiffness, are totally interdependent. Each car needs to be evaluated for where it is to be raced and then set correctly. You enter heights above the ground and distance ahead of the front axle for up to 6 holes for all 4 brackets. The design teams in the many motorsport categories are constantly developing new solutions with one single goal in mind. Easy and effective virtual prototyping of vehicle suspensions. At work i use adams, and dread to think what the license rates. Universal suspension geometry software race wise by afco. The information is input into the program and it will calculate the instantaneousroll center and can show how it. Aug 29, 2007 you cant calculate the suspension geometry from this info the loads will determine the area thickness cross section of the suspension arms necessary to carry the loads but suspenion geometry will always be chosen by the designer as the best compromise between tyre movement path of the tyre centre, camber change, bump steer if present.
Run the patch executable and follow the instructions. Pdf suspension geometry and computation download full pdf. Computesreports all critical front suspension factors like moment arm length and shockspring travel. For the amateur car designer, there are many tools available today that make designing a car easier. Real suspension design packages are too expensive for normal people. Bottom line, suspension kinetic and kinematic design exist to control the distribution of load through the 4 wheels, minimize load variation, and control the wheels position in 5 degrees of freedom. Oct 06, 2014 race car design is one of the most fascinating and yet one of the most complex aspects of the racing world. These open source cad software are similar to any standard cad software listed here which allow you to create and edit cad models. The classic version of the suspension geometry calculator.
Front end geometry help needed new pics added 728 discussion in the hokey ass message board started by 69supercj, jul 26. Software for designing and analyzing suspension systems and geometry. Very latest technical knowhow on suspension set up and testing for racing and performance road cars. Here is a list of best free open source cad software for windows. First, lets start by looking at the suspension movement and the tools available to make your life easier. Front end geometry help needed new pics added 728 the. Afco rwfront suspension geometry software race wise. Spec is software for tuning motorcycle suspension and chassis geometry. Thank you for helping keep engtips forums free from inappropriate posts. The 3d virtual wind tunnel imports stereolithography stl files, a standard cad format based on surface triangulation. This is the fifth in the video series developed for ucis racecar engineering program.
Because internet explorers maximum url length is shorter than other browsers, your project cannot be saved properly in this browser. Rear suspension geometry this is a software package that addressesthreelink suspensions and late model fourlink floaterstyle. Bas an ancient and rather ugly text based suspension analysis package for qbasic. Pdf suspension geometry and computation download full. The dirt car rear geometry layouts are varied and usually highly adjustable for both late models and modifieds. The most frequent installer filenames for the software are. For windows 7, 8 and 10 with opengl see the faq for more. The second option is to purchase suspension software. Im also doing an fea simulation but i can do this with the college cad software. Autowares racing and performance tech site 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. For windows 7, 8 and 10 with opengl see the faq for more details faq for more. The performance trends suspension analysis software illustrates the extreme movement of the roll center on a strut car.
You can get a long way without knowing specific tire data, and design a suspension that wont screw ya. At work i use adams, and dread to think what the license rates are. For windows 7, 8 and 10 with opengl see the faq for more details faq for more details. Easily and effectively create vehicle suspension designs, that can be used to help make design decisions at the initial concept stage up to and including detailed analysis of the complete vehicle. The roll center calculator plus is just the front suspension screen, rear suspension screen, and the transition handling screen of the circle track analyzer. The trailing arm angles affect the rear steer and bite and the pull bar, or lift arm, can redistribute load upon acceleration and deceleration. 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. Racewise provides the technical understanding of suspension and tire performance that racers must have in order to. Or, maybe you are looking for a little more forward bite. Suspension design determine loads to properly design the suspension components the. It runs a boundary layer modeled, viscous, compressible flow solver for high reynolds number flow with turbulent wakes. 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. Some software includes kinematic capabilities that simulate vehicle dynamics using the designed suspension. Introducing optimumkinematics, software that makes computeraided suspension design and analysis fast and convenient.
Readers will get acquainted with advanced computational methods and software tools, which can assist them in tackling complex problems in dynamicseismic analysis and design. Race car suspension setup faster lap times through better suspension tuning and development see our new web site on suspension set up. Here are the software programs that are most appropriatefor the circle track racer. This program is provided free of charge for personal use in the assisting of suspension calculations. The suspension calculator aims to help people who are building race cars perform suspension related calculations. Download the appropriate patch and save it to a temporary directory, for example c. The paper will discuss chassis layout, and then lead into the specific process to be followed in order to establish optimal geometry for the unique functional requirements of the system. This software was originally designed by performance trends.
Camber matters optimizing track performance for strut. The calculations vary from motion ratios, to spring stiffness, to wheel loads. Revealing suspension geometry design methods in unique detail, john dixon shows how suspension properties such as bump steer. Suspension geometry part 1 camber, toe, caster, kpi, scrub. Aug 10, 2010 if you are only interested in double wishbone geometry then the free and excellent cosine. Stop guessing and start winning learn the facts of front suspension geometry with this informative cdrom computer software. 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. It offers all the features of programs like solidworks, but is completely free of. With this calculator you will see how bump and droop can affect camber. Both versions of the software provide the same features.
Front view suspension geometry calculatorsimulator. If you want to use this calculator ad free, enable unlimited private models, enable more reporting options and work offline using the android or ipad apps, please. Susprog3d is the premier kinematic suspension design and analysis tool. If you purchase a new race car, or a car from another race team, the car will not be set up. The source codes of these open source cad software.
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