Baja sae series that allow collegiate chapters to primarily concentrate on the design and manufacturing of the chassis, drivetrain and suspension to improve the vehicle as the engine is standard amongst all teams. In a time when air shocks were the talk of the town this was the first rock crawler to have desert style suspension and really raised the question of how to go fast i feel like this build is one of the founding builds that inspired our industry to turn the direction it did. Telemetry and data collection to improve formula sae car. This year, in the 2018 2019 season, binghamton motorsports will be designing, fabricating, and testing a. The telemetry system in the car is based largely on an. Suspension geometry is optimized using wingeo software by performing ride, roll and steer iterations. The roll center for this type of suspension is found by creating a line that connects the center of the front attachment point to the center of the rear attachment point looking from the side of the car. Optimize suspension geometry with last years dynamic analysis results as a guideline. Offroad suspension design literature official baja sae. Baja tutor knowledge base for baja sae enthusiasts. For over 5 years auburn baja has run a double wishbone unequal length, nonparallel rear suspension with an integrated rear steer point. Suspension analyzer in lotus full tutorial supra, baja, efficycle and gokart.
Institute of technology technical support using cad data. Its very hard to list down all the calculation involved in the suspension as it depends upon your imagination and vehicle understanding. The video details out the steps involved in designing a suspension for your racing vehicle. Computational analysis of a concept of rear suspension. Trophy trucks are all custombuilt from steel tubing. Join the grabcad community today to gain access and download. 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. Suspension is a critical characteristic of the sae mini baja vehicle. This paper studies the functions of rear suspension system of a baja allterrain vehicle and gives a constructive direction to the efforts of making a durable and agile allterrain vehicle.
Steering effects the handle and the agility of the vehicle. Autoware autoware inc front suspension geometry software. 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. In case you are planning for making a baja roll cagembaja or ebaja, you can consider the option. Because of the long suspension travel there can be significant camber. Suspension design determine loads to properly design the suspension components the. The use of the software served as a valuable tool in the selection of the proper metal alloy, and the geometry of each part.
Some software includes kinematic capabilities that simulate vehicle dynamics using the designed suspension. Pioneered on the xmaxx, exclusive traxxas selfrighting powers the erevo back onto its wheels with just the press of a button. Finalizing the arrangementgeometry of the suspension based on the steering requirements, stability. 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. An effective frame will contribute to the complete utah state university mini baja team objectives by efficiently integrating the components produced by the drivetrain and the suspension engineers. Baja sae challenges engineering students to design and build an offroad vehicle that will survive the severe punishment of rough terrain and in some competitions, water. Design, analysis and fabrication of rear suspension system. Suspension redesign was a massive part of the evolution of the 2010 car. As last year engine, here in india was a different one lombardini lga 340.
Compliance under load can have an important effect and must be checked using a multibody simulation software. Finding your center finding your front and rear roll center. Software for designing and analyzing suspension systems and geometry. Upper and lower wishbone mounting will be dependent on the kingpin inclination obtained from the suspension geometry 11. 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. This is an official page of baja sae, a program of sae international.
It is also difficult to tune the geometry without a full 3d computer aided design analysis. After a thorough study of various vehicle dynamics theories, multiple iterations of geometry were made on software such as lotus suspension. Computational analysis of a concept of rear suspension system for off road vehicle. Using the special mini baja database with adamscar 2005r2 modeling a fsae suspension in adamscar simacademy webinar archive academic. It is an offshoot of the original duneoffroad buggies used in the us southwest and baja mexico, and shares many characteristics with them. Erevo naturally encourages high speed and highflying stunts, but sometimes the landings leave you rubber side up. Maximizing the contact patch of the tires with good suspension geometry is of key importance. The paper focuses on design of rear suspension system for an atv. Multi links calculation, designing iand analysis s not easy. A stickbystick build of a true longtravel prerunner rear suspension backhalf beauty.
Mini baja cad design with working suspensionsteeringdrivetrain duration. Weight, wall thickness and bending strength of tubing used for roll cage are comprehensively studied. But still i am listing down the important one in my view. The communication protocols for this shield are uart, eight bitbang inputsoutputs, and spi. A stickbystick build of a true longtravel prerunner. The vehicle must conform to the rules of the sae baja competition. 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.
What softwares are used in designing atv for baja sae india. It is a suspension found commonly in street stock and bomber classes. Each end of the car has its own roll center, determined by the suspension geometry at that end of the car. Repetitive rear suspension failures and ultimately a drivetrain failure crippled the 2009 car. Learn how to choose the right rear suspension design that fits your custom truck best. Available option are double wishbone,trailing arm, semi trailing arm and mcpherson and multilink suspension. Suspension is the term given to the system of shock absorbers and linkages that connects between a vehicle and.
The university of akron 2015 sae zips baja offroad racing team. The grabcad library offers millions of free cad designs, cad files, and 3d models. I made this rollcage according to our suspension geometry and the engine we were using. 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. Design and development of single seat, four wheeled all. Fsae, adamscar, car, suspension, minibaja, baja, templates, cad see also 9546371 how to open fsae templates in adamscar. Maybe youre fast, but with a good setup, youll be faster. 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. Learn how matlab and simulink can be used to design an allterrain vehicle atv, as well as what other resources and tools you can use in baja. Design of formula sae suspension theory in practice. The goal in baja sae racing is to design, build and race an offroad vehicle that.
Merged this thread with offroad suspension design literature hello all, ive tried doing a search and looking through the forum to see if there was a recommended book list for reading regarding the basics of designing an off road vehicle. Be sure there is no loose or bending in the suspension or in the steering components before attempting to tune your vehicle. At some point you will want to enter your own suspension geometry data or even just just view the current model in more detail. Thus, the analysis was performed using the software msc adams car, a type of vehicle suspension traditional double wishbone front with direction of tendency geometry to the oversteer effect and rear suspension arms overlaid with guiding bar. First of all decide the type of suspension which you are going to use in your vehicle. What are the calculations involved in suspension system. You need to validate your design by using analysis software like hyperworks, ansys,lsdyna,abacus etc. Brandon fontenot, timothy poche, alexandra rand, valerie vidal sponsors. The video tutorials below are designed to help jumpstart your efforts to use adamscar for your student competition or other vehicle engineering project. Multiple subteams are required, addressing issues in suspension design, chassis design, engine management, powertrain, data acquisition, ergonomics, sensor integration, composites, etc. Specialty events rock crawl, mud bog, and suspension and endurance. It determines the feel and ride of the vehicle while taking all sorts of impact from any incoming obstacles. But for a mini baja vehicle it is advantageous to look at alternative material to make it light weight. In case you are planning for making a baja roll cagem baja or e baja, you can consider the option.
Suspension analyzer in lotus full tutorial supra, baja. Find the best suspension that offers quality, traction, handling and. This book consists in a definition and analysis of baja suspension geometry to an offroad vehicle. This car will go on to compete in the 2019 sae formula competition at the michigan international speedway in brooklyn, mi usa in may of 2019. Detailed design report on design of upright and hub. Rear suspension design three link four link two link.
After this you have to decide the track width, wheelbase, sprung mass, unsprung mass, wheels and ground clearance. Using a combination of microsoft excel, solidworks, and algor. The following diagram shows how you can find a cars roll center at one end of the car or the other. Evaluate the performance of the past two years 0607, 0708 systems understand gains made in past two years suspensions designs. What is the design procedure for the suspension system of. Pressing the edit button immediately switches to edit mode listing more details about the dimensions of the model and allowing you to. A trophy trucks suspension is designed for maximum suspension travel and most are able to travel as much as 36 to 40inches. Most users dont bother worrying about importing their specific cad geometry in to adamscar, unless it is at the very end of the process, in order to make nicer looking avi files.