Baja sae is an intercollegiate engineering design competition organized by the society of automotive engineers sae. Once you have both the front and rear suspensions defined, and some basic vehicle info, the software can now make some handling predictions. Off road racing software free download off road racing. Low antidive suspension geometry is used by many rock bouncers to keep the suspension extended during a climb. This project is being built into a prerunner that will eventually be able to hit whoops at.
It also has the hubs and steering rack and pinion system attached for steering. Our jeep lift kits are more than just lift components, they are complete suspension systems. Free tools and software for race car, sports car and offroad vehicle design. 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. Car design tools for chassis, suspension, aerodynamics. We have also built the suspension for the ghr honda off road team, in enduro, off road and the australian safari, culminating with an outright win in the 2004 safari. Therefore, simulation is the only way to iterate designs before reaching the starting line.
Software for designing and analyzing suspension systems and geometry. A good suspension system is key in any type of automobile, but especially in off road applications. The suspension selection was accomplished through the study of its geometric characteristics to design its dimensions and position of installation in the vehicle according to the expected behavior. How should my team approach suspension design for an off road. Drawing templates, 3d cad, fea, cfd, suspension geometry. Offroad racing suspension systems filthy motorsports. The same technology we use on winning race cars, is also used for hypercos coilover springs for offroad and powersports applications.
Performance trends started in 1986 with the release of our popular drag racing analyzer. Suspension design tips 14 minimize unsprung weight. How to download and read offroad suspension design. Suspension geometry part 1 camber, toe, caster, kpi, scrub radius. Our jeep lift kit product line includes budget boost kits, basic kits, advanced kits, and long travel systems that provide excellent suspension travel and suspension flex. Abstract the paper explains design methodology and flow in a suspension is one of the most vital subsystems of an automobile. The chassis always returns to the static position when releasing the mouse. Their baja kits suspension systems allow you to bolt on race quality parts to your factory suspension mounts. Modifying involves drop down brackets and springs for light to medium off road use.
Over the years, our industry has seen free suspension design software come and go. Design of three and four link suspensions for off road use benjamin davis. Choosing the right shocks, coilovers or air, reservoir of mono tube all details will be discussed, plus ian builds a mock up chassis and gives stepbystep instructions on how to calculate and build his favorite set up. Design, analysis and optimization of suspension system for an off road car. Craig hall combines solid edge skills with a love of offroad racing. The company also has a product for rear 4link designs. Cylinder assist mounting tab each add to wish list. Off road racing software free download off road racing top 4 download offers free software downloads for windows, mac, ios and android computers and mobile devices. The university of akron 2015 sae zips baja offroad racing team. The goal in baja sae racing is to design, build and race an offroad vehicle that. Ability of the wheels to articulate independent of each other independent suspension 2. The suspension is built with long travel and is relatively softly sprung to absorb large bumps, dips and jumps the truck travels over at high speeds. Total control racing, 1965 mccray road, burlington nc 27217 phone.
For the past seven years, the student team has optimized its designs using ansys simulation software. Brief description of our gokart projects front suspension design. Unsprung weight, or the weight comprised by tire, wheel and suspension affects how well the tire follows the bumps and dips in the road surface. Design and fabrication of off road racing vehicle project. Pdf optimized suspension design of an offroad vehicle. All out race systems use new, longer ibeams and radius arms as well as coilover shocks. Some of our customers rides company profile products made in the u. To get a first look at what r ace can do, check out the tuning series in the suspension design library. This program is provided free of charge for personal use in the assisting of suspension calculations. Using lighter wheels, tires, and suspension components will reduce the weight. We have complete lowering kits for a roadhugging sport stance, and lift kits to accommodate massive tires and greater suspension travel. In an ifs system, an upper and a lower control arm attach to the wheel on one side, to the frame on the other side.
This project is being built into a prerunner that will eventually be able to hit whoops at high speeds in the desert. Newer commercial software has kinematic features built in that simulate road conditions. Rogue racing innovative offroad products and designs. No part of the program or code shall be reproduced for commercial use. How to choose a custom suspension, building a double triangulated 4 link, plus rock racing from jellico, tn. It is generally characterized by having large tires with deep, open treads, and flexible suspension.
The specialized offroad racing vehicles that craig hall creates may not look like your truck but they use the same basic suspensions designs found on production vehicles. Roll resistance to prevent roll over due to high amplitude excitation at one wheel 3. A good suspension system is key in any type of automobile, but especially in offroad applications. Some software includes kinematic capabilities that simulate vehicle dynamics using the designed suspension. This has been designed and fabricated from scratch with only the rosejoints as a bought component. All images in this blog are courtesy of the conrods offroad racing. Ride and handling of baja buggies off road suspension design book 1 by avinash singh, sanjay singh, et al. Racing teams dont have time to make thousands of prototypes between races. 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 needed to find the ideal geometry. Our springs have been on every winner of the indianapolis 500 since 1965. Software when the computer he was using had the software installed on it. The suspension selection is accomplished through the study of its geometric characteristics to design its dimensions and position of installation in the vehicle according to the expected behavior. Ride and handling of baja buggies book is terrific and hot reading currently. Bds suspension operates with one guiding premiseto provide true value to the customer by engineering and manufacturing the highest quality aftermarket suspension lift kits, leveling kits and accessories for 4x4 offroad truck and jeep enthusiasts.
This book consists in a definition and analysis of baja suspension geometry to an offroad vehicle. The aarm sw looks comprehensive with modeling of toe changes, akerman, roll centers, scrub, etc. Message me if you are interested in the full working model and frame with mountings. Specialty events rock crawl, mud bog, and suspension and endurance. The competition consists of static and dynamic events. Their racing experience helps when it comes time to design their baja kits. Helpful suspension geometry calculators 4x4 offroad. What are the materials used in the sae baja racing vehicle.
Susprog3d is a complete 3d software package for the design, setup, evaluation and visualization of race and road car suspension systems now with. To design suspension system for an off road buggy, steering and suspension department. The current suspension of the vehicle, on the front and rear axles, is analysed for understanding its dynamic behavior. Design of three and four link suspensions for off road use. Lower lateral link, upper reversed aarm, twin trailing links rear a variation on the above. Many offroad drivers prefer coil springs because they have a compact design and deliver a quieter, smoother ride. How to prepare vwbased cars for offroad fun and racing. Performance trends is one of the largest producers of high quality, high tech computer tools for todays racer, engine builder or performance enthusiast. The university of akron 2015 sae zips baja offroad racing. As you move the chassis notice the variations are displayed within the calculator. The offroad truck is characterized by a tube frame chassis with a high horsepower engine mounted at the front which drives either the two rear or all four of the wheels. Vehicle suspension design includes a number of compromises to provide good leveling of stability and ride comfort. Society of automotive engineers, warrendale, pa, 1995. The most recent issue of racecar engineering had a note about some design and 3d modeling software for double wishbone aarm suspensions.
It was a revolutionary design when it was released. An offroad suspension design 2005014024 this paper consists in a definition and analysis of rear suspension geometry to an offroad vehicle. Lister storm lmp designer reveals his trade secrets for suspension design. The plus version lets you include 8 types of rear suspensions on your car. It is an offshoot of the original dune offroad buggies used in the us southwest and baja mexico, and shares many characteristics with them. Links may be made to the site, but the product may not be redistributed in any way other than by direct download from. Fords twin beam ibeam for 2wd, twin traction beam for 4wd suspension is a. Note that many other types of hubs can be attached also. Suspension should be designed in a way which would help in making a vehicle provide. Instead of focusing on having high up and down travel of the whole front or rear, which is useful for. I believe that you are better off to make the suspension work in all situations and adapt your driving style to the dynamics of the vehicle. What are the off road suspension design parameters. Rogue racings products are a marriage of 20 years of race experience. The vehicle in analysis is a minibaja, offroad prototype, which is used to run nationals competitions between engineering colleges.
Low antidive suspension geometry is desired in muddrag racing to improve rear traction and absorbs rough terrain. Portal axles or portal gear lifts are an offroad vehicle suspension. There are 10 key factors to be considered when designing a suspension system, whether its for a single seater or sports prototype, and part of the skill of the designer lies in. Optimization of offroad vehicle suspension system is one of. That front suspension design is an abomination, but it happens to work well in the dirt and success is hard to argue with. Low antidive suspension geometry works well for rally racing or short course offroad racing.
The university of akron 2015 sae zips baja offroad racing team 2015 suspension system design ryan w. This is the double wishbone suspension i designed for my off road buggy project. Offroad team from 2001 and lyndon heffernans academy of offroad riding since 2003. Our mission is to bring a higher standard of quality to the offroad industry, with innovative, 100% american made products. Independent front suspension ifs, a type of suspension in which the two front wheels move independently. Design, analysis and optimization of suspension system for. Offroad vehicles have enthusiastic followers because of their. Pdf optimization of suspension system of offroad vehicle.
We stock a huge assortment of shocks, struts, and coil and leaf springs, so whether you want a smooth street ride, responsive race handling, or rugged offroad control, you can get it here. Engineers itching for their offroad vehicle to win a race need to put simulation in the drivers seat of design. Whether taking a vehicle through a slow crawl over rocks where wheel travel and articulation is very important, or through the whoops which was our case with project storm trooper. Brenthel builds kits and they also design and manufacture race vehicles that compete from baja to dakar. Suspension geometry part 1 camber, toe, caster, kpi. Development continues but under a new name, smbs is now r ace rapid concept evolution nov 2018. Because its offroad racing, you want the most wheel travel and suspension. Calculations will also allow you to configure your preferred antisquat setting and get your roll axis where you want it to be, both of which can make or break your offroad adventures. In its most simple role, your suspension needs to hold your truck up and keep your tires planted on the ground. At rustys offroad we pride ourselves on being jeep suspension specialists. Hyperco is wellknown for our highperformance suspension springs in the motorsports world. The classis 60s sports and racing car rear suspension.