Designing Suspension Kinematics in 3D with No Solids in Fusion 360
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- เผยแพร่เมื่อ 7 ก.พ. 2025
- In this video we are going to learn how Fusion 360 can create mechanical motion without having to model anything! Because Fusion 360 uses Components, which contain their own coordinate systems, we can plan out suspension geometry using sketch points and As-Built Joints to create advanced motion quickly without modeling all the parts needed in the real world.
We will look at a dual A-arm suspension including steering link to take a look at suspension travel and bump steer without modeling a chassis or suspension arms.
Rotiform Wheel can be downloaded here but is not needed. a360.co/3qKqNUw
This is amazing. I've watched so many videos for years, bought courses, and read books that havent taught me what you did in 25 minutes. Thank you
Great to hear! I did a few videos in this series based on a user request. While Fusion isn't the strongest at this sort of thing while other programs like Inventor and Solidworks have sketch blocks and lean more toward kinematic design, it is possible with Fusion :)
We do have a site where we are selling courses. www.LearnEverythingAboutDesign.com Right now its mostly intro/beginner content but there will be more advanced topics going up now that the intro content is out of the way.
@@LearnEverythingAboutDesign
I can design just about any part including a chassis and incorporate a mesh car body along with "dummy" models of engine packages and drivetrain. Where I get stuck is figuring out how to create my own proper geometry based upon specs like track width and upright mounting points. Do you use wyzant? I would love a tutoring session. Thanks
I do not use Wyzant, but my site LearnEverythingAboutDesign.com does have coaching options available. At the moment my time is a bit thin but free free to drop me an email about what you are looking for. support@caducator.com
Excellent representation of the Bump Steer, I am thinking about how to cancel this negative effect on the dynamics of the car.
thanks for your tutorials that always teach me something new
Thanks Mario. In the video I just uploaded I added steering and also made an angled upper arm pivot to show how it is done. Dynamically things get really tricky once we start adding too much. Near the end I show how you can right click on a joint and temporarily lock it. So if you want to turn the steering 10deg, lock it and see what the suspension does you can. Motion studies are ok but honestly they haven't changed in 5+ years. I wish they would get some attention.
Looking torward to seeing how to integrate machanical parts with forms ... Thanks for this one, very, very usefull and clear as always 🙂
Glad it was helpful!
Wow, this is much simplier than my own experiments with this topic. :))) And my models didn't work 🤣
...I'd like to push it further shall I? Is there a way to have dynamically displayed camber gain and other angles variations? Can it be done in an easier way than creating "mock" joints with mock straight references, since I've seen it updates those values as you play with the thing... That would be a handy trick!
If you do this in a 2d sketch you can have some dimensions as driven and you can see them displayed.
For displaying it dynamically on the screen for some joints like revolute you can see an angled displayed on the screen at the joint icon but its often hard to see. Sadly there is no dynamic plotting or anything as this is sort of a cheat to do this work...
What shortcut do you use to grab the wheel in the confines of the As-Built joints?
10/10 tutorial, up to speed on what I need for a project.
Hey Phillip, not sure exactly what you mean on shortcut. Moving specific joints can be tricky but you can right click on a joint you can use "Drive Joint" to move just that one joint. It will let you see what happens when you rotate just a single joint. I don't use any shortcuts for that(don't know if there are any). If you mean when applying an as built joint. After you apply a joint you can use the Right-click marking menu in the 12 o'clock position to repeat the last command.
I don't use it but J is the shortcut for Joint and Shift+J for as-built. You can also use the S key to open a search box.
Great Video. I love your channel! is there any way to plot and measure the amount of bump steer? Or in general measure, plot and ideally export measuring results to Excel?
in theory we could 3D scan a real car to get the pickup points and then simulate it in Fusion. Would be great, you could add a video with such a real world example.
Thanks! So sadly no not easily. Software like Solidworks has the ability to plot points on screen and on a table. With Fusion the best you can do is Drive one of the joints and measure from a reference point. Basically you would measure the angle of the wheel relative to the midplane after driving something like the shock compression. I will see what i can put together. Its a "brute force" kind of solution and no automation to put it into a spreadsheet sadly.
Hey RaceCarEngineer, I recorded a video this morning showing how to measure and plot bump steer. Should go up in the next 30mins. Its a "Brute Force" way but hopefully it helps. Great suggestion!
@@LearnEverythingAboutDesign thank you. Great work.
THERE IS THE FREAKIN BALL JOINT TYPE I WAS LOOKIN FOR damnit! Oh, how can I tip you a coffee? :)
I don't have any patreon or buy me a coffee set up, but i do have a merch store. learn-everything-about-desi-shop.fourthwall.com/ if you scroll down there is a donate option there, or you can buy courses at www.learneverythingaboutdesign.com :) Not needed but if you want those are some options
@@LearnEverythingAboutDesign Thanks, I'll check the merch! This has been super useful, today I set up a rear with anti-squat. It works but duuude is there's stuff I have to learn... Convergent arms (anti squat) can be a nightmare with bumpsteer at rear. And I think only in Fusion... If I set the rear low arm, outer joint, to be a balljoint. I hasn't to, it's a hinge in real life. If I set it to be a hinge (and a ball at the upper side ofc) it behaves as it's locked. 😮💨
At least now I can build a study model, with your tips. Before I couldn't even properly design it and I was close to buy radiomodel parts to build one. Now if the digital thing doesn't help me to figure out the settings and measurements, I can at least draw and 3Dprint a stickman of the suspensions and tune out on that.
Meanwhile my crosskart lies in the garage, armless like the Nike of Samotracia. 🥲