Blender car hierarchy?

Development World Creation
1

what tool do i use in blender to set up the wheel/chassis hierarchy?
i know you dont use bones and some things ive tried are almost there but i need a little help to get it right
closest so far is:
parent - object, puts the wheel bones at 0,0,0 so the wheels flail around in ue4
parent - vertex, kind of works but only 2 wheels are ‘attached’ in ue4 and the front wheels go wobbly when you turn

i did try other things the last time i tried (couple of weeks ago) but that was using bones so it just spazzed out.

thanks for any tips

edit:
actually trying the parent - vertex again worked this time
still get the front wheels wobbling when you turn though

edit2:
adding mesh space node on the anims fixed the front wheels

fixed!

**for anyone else, heres how to replace the mesh in the car blueprint template with your own from blender **(worked here at least)

blender
chassis and wheels as seperate objects (no bones)
parent wheels to chassis, vertex - vertex (1 wheel at a time)

ue4
import as skel mesh with rigid body ticked (advanced)

physics asset, change chassis to box - reset -box
wheels physics type to kinematic

new anim blueprint - vehicle
drag from final animation pose - wheel handler
drag from that - mesh space ref

replace mesh and anim in sedan blueprint with what you just made
raz around in your new car :slight_smile:

all thats left is to work out how to make the car lean?
and why if it goes on its side it self rights?
anyone?

2

haven’t tested this fully yet but use the same system as i did for udk but make sure the “root” bone is at 0,0,0 .

if you don’t put the root at 0,0,0 you’ll have loads of problems, remember also that the scale is important, i always test with the 3rd person template that way i can pull both meshes into a map to check the size

3

you need to change the “suspension force offset” in the wheel blueprints, set it to a minus number or it leans the wrong way.

I noticed that as well, don’t know how to fix that yet although it reminds me of UE3 when there was the “bCanFlip =” line in the code and it was set to true.

4

thanks

yeah its like the upright constraint in ue3 vehicles, although you can get it upside down if you really try.
also if you land from a jump at a silly angle, that in real life would send you end over end, it just kinda sucks the car to the ground as if nothing happened, not even a bounce or anything.