Hello forum. I’m fairly new to FSAE and suspension design. One of the overwhelming problems that I’m having is figure out the step by step. Abstract. Design analysis of suspension especially for racecar suspension is very crucial to achieve maximum performance and handling. Suspension design. This article deals with design of Formula SAE Suspension by considering various loads and their simulation on each component of the system.

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With this you can use your tire model to obtain forces on the car, these forces will make you dessign to calculate load transfers, then re-calculate the tire forces, and iterate till you converge.

OptimumLap would be a good place to start as it will give you a decent idea of what desiggn affects laptime on one of these cars. Study the pneumatic tires very well All the fitting is already done and all the equations of the model written down -Write a simple code for the Four Wheel model that is able to calculate the slip angle for a given radius and steering angle, you will have to make assumptions about the slip angle at the rear.

I have written down one approach, there is no “best” one, but this is systematic, and “relatively” simple since it seems to be your suspenison go at it: After this iteration, how can these ideas you’ve formed achieve your high level goals?

Then; Put the whole geometry on a kinematics analysis software Prior art, read on suspension design in RCVD for example. Then start analyzing the results from the softwares such as the camber change due to body roll, bump, suuspension God be with you and Good luck with your design. Analyze handling of the car for different parameters and choose system parameters. Secondly; There is a “Find” button at the utility bar up at the right just beside the “New” button, So try to search for your topic if it had been discused before so as to save time and effort.


You’ll have to loose something in order to win the other. What are the functional requirements, for the suspension sub-system, these should emerge from the functional requirement of the car.

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Suspension Design Step by Step Process

They have Formula SAE cars and course already modeled into the software. I’m fairly new to FSAE and suspension design.

One thing that can be noticed is actually how bumpy the track is. Who is using what, what has been used before? These susension should be written in a table for fast reference. It should be very helpful too. What do you want to achieve?

Get the basics right first, the details only after. And start sketching on the front view geometry by drawing lines to express your wishbones and your unsprung mass and then move to the side view The next thing that becomes obvious is the teams that have a good car design, and the cars that dialed in one very in particular if you watch it.

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Willingness to compromise is key to coming up a with a good design, nothing will be perfect. Sorry for any typing mistakes.

Remember that the tires are the only contact you have between the sprung mass and the ground. Another free one and quite successful is Wishbone.

What are the specifications associated with your functional requirements. I really like one quote or an OptimumG motto that says “Knowledge desogn Is knowledge sspension. I suspenion I haven’t said something stupid, if so I duly apologize. Hello Benn, First warm greetings and afterward; I’m a beginner too so don’t take this as an expert talk Do you want to just keep the wheels on the car and complete the laps or do you want deaign car that is the fastest thing in a corner?


The time now is Or find the yaw moment when both external tires are at peak for different radius. It’s skipped forward to the final 5. I remember watching a video where Mr. One of the best softwares out there is OptimumK however it is not for free. Only then will you have to worry with roll centers, roll stiffness, kinematics, motion ratio, dampers and such things. You will have to make basic assumptions to estimate the values.

Vehicles without suspension have won, and they can be fast, as long as the proper adjustments are left open for balance. User Name Remember Me? You won’t be able to be sure about the results unless you have fse data!

If you want to reduce fabrication cost for the year, you may want to stick to the tires and wheels you already have. Know why before knowing how!!

First; I want to tell you a tiny little thing Then, build, race, win. Use the Bicycle model first for practice, then build to a Four Wheel 2D model. All times are GMT You can’t truly design something if you can’t perform an analysis on it.

Read as much as you can, follow the groundwork that’s already been laid out from years of people before you. Some function and associated specifications can be derived from the RuleBook 3. I’d start by analyzing and understanding a few existing suspensions.

Milliken Research Associates, Inc. I basically don’t know where to start there is so much information.