Okay.
So we have everything.
Our front and rear suspension complete and hooked up.
So now we need to take some steps to make a drive.
And of course, we need something to drive on.
Let's add that real quick.
So I'm going to add a mesh, a plane.
I'm going to scale it up.
So 100.
So it's a pretty big, you know, move it along the Y.
It's obviously going to be going forward.
And let's make this a rigid body.
Rigid body.
We're going to make it passive.
We're going to make it a mesh.
I'm going to give it a friction value of.
Point eight and a sensitivity of zero.
And let's make sure.
We need to move it down a little bit so it doesn't start out.
If we're on top of the.
Vehicle.
So something like that.
And.
Now I need to make a couple more rigid bodies.
We need to make our CG rigid body.
So I'm going to make sure.
Actually, I'm going to select my the ground.
Because we actually want that to be.
And the main collections are moved to collection.
And we'll just do collection collection at that.
All right.
Now I'm going to make sure I'm in my Rick collection and I'm going to make a C.
So I'm going to shift a cube, scale this down.
That right there.
And I'm going to move it a little bit in front of the center of the two axles.
And I'm going to move it down to about right there, maybe.
So that's the location of the key.
And I make it a rigid body.
It's going to be active, of course, and we're going to give it a master KG.
And we really care about the restroom settings.
All right.
Now we need another one for.
The body.
So I'm going to scale this one way down.
I'm going to move it up so I can see it easier.
Can make it a rigid body active.
And we'll just make it ten kilograms like that and we need to make sure to name these.
So let's do underscore 40 and for this one, if we want to do underscore city.
Okay.
And now we need to connect this to our subframes.
And to do that, we need our fixed constraint.
So let's copy that from our other file here.
Come down and we'll take this file or this object, this constraint and copied to clipboard trill c
and then come back over here.
It's here and we'll paste it in control key and it's right there.
So let's move it up to right there.
We'll make another copy over here and make another copy on top.
So let's connect all this up.
So this constraint is going to connect our front subframe to the CG.
So let's do that.
We don't even have it set up as a constraint, but that's okay.
So we'll do subframe.
CG.
This one's going to connect our body, rigid body to the CG, so connect CG to the body.
And this one is going to connect our C.G. to our rear subframe.
Like that.
All right, let's make sure that our settings are right and they are simple steps for frame.
And let's see if this thing works.
So I have it saved.
Make sure to save it and let's press play.
And.
Something is happening, but not what we want.
So let's look at this.
And it is active.
All these are active.
Richard.
Body, heat strength.
It looks like something is holding it up.
I guess our subframes are still passive, so we need to make those active, don't we?
So active.
Active trialists say that now.
It works.
Except I put my ground way too low.
Let's move it up.
It only needs to be a little bit low.
Like that.
Okay, Phyllis.
And now hit the ground.
So it looks like it's working.
So now we need to tune our suspension.
And to do that, we're going to do our pre votes here.
So.
Let's select our front SUBFRAME Let's get our controller to get.
Let's scale it up some.
What a supplier breaks.
It doesn't move a little bit and let's start adjusting this.
So our spring stiffness is 10,000, which is fine.
Our.
Let's see.
Damping factors.
Point one.
That's fine.
All right.
So it's.
It's sitting way too high.
So let's suggest that.
That's too low.
All right.
I knew something like that.
Although it looks like.
Okay.
I don't think this thing's going to be an active.
So.
All right, now it is.
All right.
Now it looks like everything is moving.
I take my subframe sometimes when you make something from passive to active, it takes a few cycles
for it to actually acknowledge that.
So be careful with that.
All right.
So I'm going to get my preload ready and I'm going to adjust it all to that right there.
Actually, let's go ahead and parent our body.
Model parts to our body, rigid body.
So I'm going to come into the outline or you're going to right click on body.
The Select objects and then shifts select our body rigid body control p and this will allow us to tell
if our.
Right.
Height is correct.
All right.
I'm going to select the front subframe here and the outline so I can I just said, all right, let's.
So it's way too high.
So let's lower preload down.
Maybe.
Something like that.
And I'm going to make this spring stiffness more like.
25,000.
Okay.
That looks good when we reset the simulation.
Do the rear.
Let's pick the rear subframe and the outline are here.
And let's see where it is.
So it's sitting way too high also.
Let's lower it.
Sue Something about right there.
Alex Pretty good.
Yeah.
That looks good.
I think our rent spring rate is still a little too low.
So let's let's increase that.
Um.
40,000, maybe.
Maybe our damping is too high.
You know, five.
It still seems to be moving rather slowly.
We'll see what happens if we get 80,000.
Yeah.
That's better.
And will increase our arrears.
We'll just double our rear stiffness also.
I'm going to make this 20,000.
Go.
All right.
That looks pretty good.