ok some progress.
If the physics object are all one skeletal mesh and I use set angular physics I can get a simulated turret working. with collision on the world impacting the turret and the tank.
However it still leaves the issue that if I want a seperate actor attatched via a physics constraint they wont attatch to chaos vehicle.
I can conect a kinematic turret and animate it but it wont interact with the world eg if the tank is upsidedown it goes throug the floor.
I made my own experimental vehicle base and turret not using chaos.
and this seams to work but id like the features of the chaos vehicles.
TLDR:
How do i constrain another simulated physics actor or component to a chaos vehicle mesh?