Detect traction loss on constraint vehicle

[FTPSOW]

What would be the best possible way to detect when a wheel on a constraint vehicle has lost traction, and starts spinning out (aka burning out) I don’t know if there’s a simple way, or I have to figure it out depending on how fast the body is moving in comparison to the wheel. Does anyone know how to do this?

[codyorr4]

pretty complicated subject IMO, but depending on your vehicle design there is a lot of factors that can go into this.

check the first comment out on this article.

Skid Marks Code Design / Structure

There is actually a way to calculate the skid of the car: The only force acting on the car is the tires, so as long as it doesn’t hit anything, by tracking the position / rotation of the car and calculating the force needed to accelerate it the way it is accelerating, you can figure out not just an approximation, but exactly how much force the tires are exerting and whether there is any slippage (at least down to the granularity of the physics simulation). Doing that exact calculation is fairly…

this is for skid marks, but he tells you how to detect lose traction to create the skids.

[FTPSOW]

How would I get the RPM of a wheel being moved via AngularVelocity in a HingeConstraint?

[stravant]

wheelPart.CFrame:VectorToObjectSpace(wheelPart.AngularVelocity).X

Or maybe .Z, I think it’s X given the cylinder orientation, but I might be remembering it wrong. Also if it’s a sphere and not a cylinder for the wheel it will be whatever axis you attached it on, just use a print to figure out which, one axis will have a much larger value than the others, it’s the one you want.

[FTPSOW]

I get the error “AngularVelocity is not a valid member of MeshPart”

[stravant]

My bad, it’s RotVelocity, not AngularVelocity.

[strategic_oof (Heby)]

I found this with sucsess

local AngVel=CalculateWheel.AssemblyAngularVelocity.Magnitude
local LinVel=CalculateWheel.AssemblyLinearVelocity.Magnitude
local SlideScore=AngVel/LinVel	
if (LastSlideScore-SlideScore)>.12 or (LastSlideScore-SlideScore)<-.12 then
	warn("Sliding!")									
end
print(LastSlideScore-SlideScore)
SlideScore=(LastSlideScore+SlideScore)/2 --The Complete Average	
LastSlideScore=SlideScore

You got to fine tune it for your needs tho
Especially line 4 of the code

[strategic_oof (Heby)]

gosh it always returns as nan for some reason
I Belive its coming from line 8

SlideScore=((LastSlideScore+.01)+(SlideScore+.01))/2 --The Complete Average	

--Bandage Solution :/

Yes, I know im replying to a dead post