So in my research on castors and turntables (which by the way is making me loose my mind) I came across this stagecraft wiki:
newbielink:http://www.stagecraft.com/wiki/index.php/Main_Page [nonactive]
Looks like it would be extremely helpful, its too bad that no one has really added things to it yet. Maybe you all would be interested in adding things. Might be a good resource for the future.