Extra Wheel Rotates on the Z Axis

[srhyne]

I'm creating a rigged tractor truck and trailer and the extra wheels on the truck and trailer rotate (jitter) in the Z Axis. Below is the hierarchy of the objects linked:
1. CarBodyMesh > TowingHookMesh > TrailerBodyMesh > ChassisSuspensionMesh > ExtraWheelMesh > 3D Model Wheel

It seems the extra wheel rotates on the Z whenever the truck changes direction. Is there a way to lock the Z rotation?

Thanks!

[Patrik Martin]

Yes, in the configuration for the ExtraWheel you are able enable the "Fixate Wheel" which disables it from turning i the movement direction.

[srhyne]

Thank you! I was snooping around in the settings and I discovered that setting last night and it fixed it. Thank you for the quick response!

[srhyne]

Another issue. I was able to create my truck and trailer animation in 3DS Max using the spline speed controller and everything worked perfect. However, I exported only the truck and trailer (3D objects) to an FBX file and baked the animation. I imported the FBX file into Lumion (another visualization software) and the extra wheels are squished (elliptical shape). They spin but as a deformed shape. The other 3D objects and other wheels that are part of the 4Wheeler mesh are fine. When performing a nonuniform scaling to the ExtraWheels, does that affect the 3D shape? Thanks!

[Patrik Martin]

Another issue. I was able to create my truck and trailer animation in 3DS Max using the spline speed controller and everything worked perfect. However, I exported only the truck and trailer (3D objects) to an FBX file and baked the animation. I imported the FBX file into Lumion (another visualization software) and the extra wheels are squished (elliptical shape). They spin but as a deformed shape. The other 3D objects and other wheels that are part of the 4Wheeler mesh are fine. When performing a nonuniform scaling to the ExtraWheels, does that affect the 3D shape? Thanks!

Not really sure why this is happening, but one way we have seen solve this in other cases is to do a Link Constraint(3ds Max) or Parent Constraint(Maya) between the high poly and the wheel mesh then export.