After month on trying to learn how to make suspensions with raycasting, I have decided to start learning how to make cars with Constraints, and I have started today with experimenting with Constraints. Thanks for the help, and your vehicle model that you have shared with me in one of the last posts, is helping me undestanding constraints. Thanks for all.
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Using constraints really will be easier for you in the long run.
That said, Roblox physics constraints come with their own challenges. You will need to pay close attention to part masses, and more specifically, the mass ratio of parts that are connected with constraints like springs. If you make something like a car with a heavy body and very low-mass wheels, you might find that it vibrates, jiggles, even flies apart. Whenever possible, try to have connected assemblies have similar mass, or at least not orders of magnitude of mass difference.
The other think to look out for are how the spring settings interact. Damping, stiffness and max force are obviously all important tuning factors, but in a vehicle suspension the spring “free length” is equally important and often overlooked. It establishes the preload condition when your spring is holding up a mass. If you try to tune with stiffness alone, you’ll probably find it difficult.
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