You'll have to be more specific. We can't do the animation for you.

Originally Posted by stwert

Okay, if you parent your cars to the wheel, I would create a control to act as your driver. Then key the wheel 0-360 degrees and using the driver control, say 0-360 as a new "wheel rotation" attribute.
Also key the cars 0 to negative 360 using the same driver. I think that should work, if that makes sense. Best thing to do is to experiment. If you have a question about how set driven keys works, feel free to ask.

Originally Posted by stwert

I would point constrain the cars to the wheel, then aim constrain them to the ground, instead of using set driven keys.

Originally Posted by NextDesign

Okay, if you parent your cars to the wheel, I would create a control to act as your driver. Then key the wheel 0-360 degrees and using the driver control, say 0-360 as a new "wheel rotation" attribute.
Also key the cars 0 to negative 360 using the same driver. I think that should work, if that makes sense. Best thing to do is to experiment. If you have a question about how set driven keys works, feel free to ask.

Originally Posted by stwert

this is what i tried

select each individual cart and load as driven + select the wheel as driver and both on rotate x

i then pressed key in the driven key window at the first and last frame

i selected the carts on first frame on timeline set a key and rotatation at 0 on last frame set keyframe and rotation at -360

the same was done with the wheel but with +360

when i play the animation there's no movement Im doing something wrong somewhere sorry im a newbie

Originally Posted by ahanslot