But the entire model has got to be the size of a sun, but 2 or 3 times the polys, it is turning out to be a problem. With just the hub (no sun) at what we think is full size crashed BC for me. I then scaled it down to 0.1% of its original size and it worked. So we will try it some more, but its not looking too good at the moment. Sorry for getting all your hopes up.