Live axle 2 leading arms panhard rod with steering for front suspension. Rear suspension design and aeris kinematics bird mtb born. Motorbike design is a software studied to help technicians and riders to analyze and to design the motorbike balance and the features of the rear suspension. When our ceo and chief designer, noel buckley, set out to design his first bikethe vtach, he started with a certain suspension philosophy and a list of ride characteristics that were important to him. For windows 7, 8 and 10 with opengl see the faq for more details faq for more details. It is the prime source for the book motorcycle handling and chassis design by tony foale and software packages for motorcycle suspension setup and analysis. While using the software you learn about which items are important for the handling characteristics of your bike. Best of all, the software gives users the flexibility to create and test completely new suspension designs. Today, these packages model almost every conceivable suspension system. Sep 05, 2016 exactly the same way as you would design a cars suspension system. There are several reasons for open sourcing the design but the main reason was to be able to make it available free of charge to all the small custom builders out there the design is really well suited to the needs of the small custom builder that wants to offer a niche market suspension bike but maybe has been put off by the expense. Suspension setup guide part 1 set your sag properly at virtually every mountain bike and suspension launch we attend, were told to simply sit on the bike while someone slides the funometer ring to the base of the fork or shock, then we hop off and. Car design tools for chassis, suspension, aerodynamics.
Bicycle suspension is used primarily on mountain bikes, but is also common on hybrid bicycles. Beyond design, what other capabilities has the software. Bikes with short travel are usually designed with an atwheel spring constant plot that has a sharp rise progressive deep into the travel, helping to. The car uses a lot of parts from an old vw beetle which puts a limit on how good the vehicle dynamics may be in. Costum bikes design is fusion of art and engineering. When our ceo and chief designer, noel buckley, set out to design his first bike the vtach, he started with a certain suspension philosophy and a list of ride characteristics that were important to him. Each cad and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or realworld item, product, or good it may purport to portray. Many fitters will use bikecad to model a riders existing bike. Lower lateral link, upper reversed aarm, twin trailing links rear a variation on the above. What cad software should i use to design custom bikes.
In fact it allows to analyze the geometry of the motorbike, from the calculation of the center of gravity to that of the most significant technical parameters, and quickly to study the. A good suspension design, coupled with proper tuning, will produce a bike with suspension travel that is fairly independent of pedaling. An example of an efficient, lightweight full suspension bike can be seen in fig. Jun 27, 2018 a basic primer on mountain bike suspension designs. In this episode, i summarize the design of the suspension. When he was racing downhill, it was more like 30% to 35%, depending on the bike and the course. Nov 04, 20 horst link four bar suspension is a fully independent design which features a chainstay pivot located in front of the rear wheel dropout the horst link, a pivot just behind the bottom bracket, and one at the top of the seat stay which is connected to a leveraged shock linkage. Honda gold wing android compatibility 2020 2020 husqvarna fe 350 motorcyclist podcast episode 1 2020. Mountain biking gets a boost from generative design. Some software includes kinematic capabilities that simulate vehicle dynamics using the designed suspension. We then go on to provide a more detailed look at how suspension works.
The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. A full suspension mountain bike, in this case, an older trek fuel with a linkage driven single pivot design. You can also use this function to compare front and rear suspension although be careful as only the model at the front of the drawing is saved within. Upper lateral link, lower parallel links, twin trailing link rear a variation of the reversed lower aarm style.
The old model remains at the back of the drawing, you can use it as a guide when making adjustments to the layout or visually compare how the changes will perform when the suspension is in motion. Pdf optimum suspension design for motorcycle braking. A beginners guide to mountain bike suspension design. These measurements get plugged into a 3d computer aided design software package, where we create a 2d kinematic layout of the bike. How your bikes suspension design affects its performance. For many, suspension is what makes a mountain bike a mountain bike. Suspact software forces you to work in an accurate way and work in one direction with your setups. Bikecad, a free online applet, guides users through designing their own road, mountain, tandem or recumbent bike.
Pinkbike, the worlds largest mountain bike community and a first reference in mountain bike, called upon the services of creaform, who teamed up to undertake a suspension analysis journey for the benefit of users and readers from around the globe. Do you need an eyecatching bike graphic design that resonates with bikers for your business or event. Linkage is a powerful and easytouse but richfeatured 2d bike suspension. Riffles preferred starting point is between 25% and 30% for his 160mm to 200mm travel bikes. Almost every bike not in the two categories above will fall into the fourbar camp in one way or another, and many brands have patented their own variation of this design. Think of squat as the tendency of a car to pitch backwards when you step on the accelerator, tolentino explained. A basic primer on mountain bike suspension designs. Exactly the same way as you would design a cars suspension system. It allows changing components, colors, checking suspensions, frame size, wheel size etc. Ultimately the quality of the design will be judged on the performance of the full vehicle, but an early assessment of the suspension design as an individual unit is essential. Motochassis is for those interested in motorcycle handling and chassis. Fourby4 suspension technology the fourby4 suspension platform is the cornerstone of knolly bikes. The car uses a lot of parts from an old vw beetle which puts.
Basic full suspension types reference with pictures. Bike 3d configurator is bike design software for android which enables building bike using contemporary technology and graphics with great ease. Ktm 390 adventure 2020 yamaha xt250 dirt bike suspension sag. This is an updated version of the basic full suspension types reference to help beginners understand the everchanging and evolving world of suspension design. Wheel path determines the dynamic geometry of the bike, meaning the way the. This has been designed and fabricated from scratch with only the rosejoints as.
In fact it allows to analyze the geometry of the motorbike, from the calculation of the center of gravity to that of the most significant technical parameters, and quickly to study the changes to vary. The classis 60s sports and racing car rear suspension. Linkage software provides this shock compression curve on the tab called. Knolly bikes the best mountain bike suspension design. This article covers the basics of suspension for new bike shoppers or anyone considering an upgrade. Dnm mtb dh downhill mountain bike fork air front suspension 118 or tapered fork steerer post mount 110 x 20mm wheel axle for 26 and 27. Motorbike design software to analyze and to design chassis. It is one of many factors that contribute to your riding enjoyment.
Our talented community of graphic designers uses bike graphic design software to generate hundreds of amazing bike graphic designs tailored just for you. Vital mtbs 2016 test sessions included 17 bikes with varying suspension designs. If so, you should try posting a graphic design project on designcrowd. Creaforms handyscan 3dwhich was used for the shortlinked bike suspension analysisboasts a 0. Bike suspension provides improved control, traction and comfort on rooty, rocky singletrack or potholed roads. On the simplest singlepivot designs the shock damper is attached directly to the swingarm.
Typical rear suspension screen, here analyzing an angled 4 link rear suspension and driveshaft movement and u joint angles. Project bike 3d configurator created so that you can build your existing or future bike with modern technology and 3d graphics. The tension link is an open source suspension bike design it is a non patentable design and is being released under a. The suspension design process discussed at the beginning of this chapter has been summarised in table 4. Jan 26, 2016 there are a number of software to design a suspension system. While mountain bike suspension components can be the most rewarding, exciting and expensive components to buy, setup and configuration is the difference between a satisfying, bump gobbling trail. Users can edit characteristics of both the bike geometry and the rider and then see the effects of those changes in real time. Winters axle with 4 longitudinal links, 2 birdcages and jacobs ladder. Mar 25, 2010 brief description of our gokart projects front suspension design. Articles and illustrations on motorcycles and racing in general. From there, they can design an entirely new frame, or they can retain the existing frame and swap in different components such as seatposts, saddles, stems, handlebars, headsets etc. Generate suspension kinematics and compliance properties in parsfiles, for direct use in carsim, trucksim, and bikesim. Rear suspension design and aeris kinematics bird mtb.
Bicycle suspension is the system, or systems, used to suspend the rider and bicycle in order to insulate them from the roughness of the terrain. We can design suspension systems to produce an opposing force, called antisquat, to prevent that from happening. Linkage professional is our fullfeatured 2d suspension analysis software emphasizing on mountain bike simulation but also usable for motorbike suspension simulation or arbitrary linkage simulation, ranging from single swingarm to 6bar linkages. What is best software for designing suspension systems. For windows 7, 8 and 10 with opengl see the faq for more details faq for more.
Simplified vertical, roll, cornering, traction and braking loads are applied to the suspension system and the response of the system to each is recorded. This has been designed and fabricated from scratch with only the rosejoints as a bought component. Suspensionsim can generate custom outputs based on user specifications. Modern smart dualsuspension bikes have a major amount of engineering built. 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. Few are following 1 solid worksfor static design, can calculate the dimension of members a arms springs free length, joints positions and orientations. Suspension design is a very complex topic, and theres a huge variation in characteristics not only between suspension designs but also between bike models which share the same design. Susprog3d is the premier kinematic suspension design and analysis tool. Mountain bike suspension is designed around keeping the wheels in contact with the terrain at all times, increasing traction and also cushioning impacts from the trail. Introducing behind the numbers a new suspension analysis. This design in particular will have a digressive slope, allowing for a smoother ride regardless of where the swing arm is at, and is normally found on bikes with lots of suspension travel. Newer commercial software has kinematic features built in that simulate road conditions, or will calculate pickup points based on.
Brief description of our gokart projects front suspension design. It is fun to play around with simulations of the most popular suspension systems that are already set up on the website. Bikecad lets you design your dream bicycle online, for free. The ultimate guide to mountain bike rear suspension systems. Bikecad can be used to design any diamond frame bike and control it through a comprehensive set of parametric input fields. A free light version of the online software is available so you can try it out before you buy. In the future, we see the project as a online shop or service with which you can easily build and. The design works to keep constant a parameter called antisquat. Bike shock pump for mountain, mtb, road bikes and motorcycle high pressure 300 psi for front fork and rear bicycle suspension and air shocks antileak valve thandle design industrial gauge. There will be different terms that mean essentially the same thing, but suspension design is suspension design, and if you start from the basic mechanics equations, there are no d.
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. To achieve this, suspension designs have to deal with multiple forces, not only from the ground, but also from pedalling and braking. A fourbar platform allows the suspension to operate mostly independent of braking, and it allows designers the most control over leverage ratios. There are a number of software to design a suspension system. Change components, experiment with colors, see how suspension works, show your friends, create the bike of your dream. Once i had fully grasped mountain bike rear suspension design myself, it made me realize how much misinformation there is out there on the internet. Ktm 390 adventure 2020 yamaha xt250 dirt bike suspension sag adjustment howto 2020 husqvarna.
Complete graphs and reports are included, and several new. How to design spring suspension system in bikes with. Suspension properties are not only linked to each other, the geometry and the shock damper, but also to the position of the bike in its travel. This means that a scan of the bike performed using the handyscan 3d could highlight even the slightest discrepancies between the design tolerances and specifications, according to the manufacturer, and those of the actual.
Discover linkage professional, the timesaver tool for your design process. Front suspension ffe software motochassis by tony foale. How your bikes suspension design affects its performance on. We thought it would be neat to see all the suspension designs cycled backtoback for a fun comparison. It can be linear, progressive, digressive or indeed a mixture of these. The suspension analyzer does a complete 3d suspension analysis, including bump steer, ackerman, caster gain, anti dive, tire scrub, camber gain and much more. Suspension design an overview sciencedirect topics. The swingarm rotates around an instant centre fixed on the main pivot and the leverage ratio is determined by the position of the shock mount. 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. Here, youll find tutorials on using bikecad pro, a standalone application for bicycle frame builders and bicycle fit specialists that runs on a pc, a mac or on linux. Most probably there would be a need of 6 inch play in the wheel and considering the motion ratio of 0. They can then take their finished design to a builder, or even attempt to build. Its better to use fox or polaris suspensions designed for atvs.