Crawler tracks - track not turning

[Makkster]

I've managed to succesfully rig a tank using crawler EXT, Extra wheels, cog wheels and crawler track.

I created a movement for the the tank body and wheels and then created the treads when the tank was sitting on the ground. I've ensured that there is a gap for the treads to fit in and that the crawler ext wheels are larger than the wheels in the crawler track.

When I resimulate for the crawler tracks the wheel with track written on it and the other wheels in the crawler track are all rotating since I parented them to the wheel relocators and so on.

For some reason the track itself is not turning - it hangs very nicely between each support wheel and is not flipping out or doing anything else weird, it's just not turning.

Is there any thing I can try adjusting or checking to rectify this?

[Makkster]

Actually, to add further to this - the tread moved for the first few frames but then stopped entirely.

[Micael Belin]

Hi Makkster,

Can you verify the drive wheel is really rotating throughout the animation? It may be that the track is stuck at some location of the thread, but that usually shows with the thread flapping in stress.

[Makkster]

I'm pretty sure it was, unfortunately though the scene later crashed and when I re-opened it the connection to many of the parts was broken. I've since started again.

Can I ask another question? Can you explain how I need to parent the various parts of the crawler tracks? I'm unsure where to parent the crawler tracks frame transform.