AAAAAAAAAAAAAAAAARRRRRRRRRRRGGGGGGGGGGG
god I hate it when everything goes wrong. I now have to rederive my equations to make my writeup look proper. despite the fact it makes no diffrence noticable to mankind. and then ignore all the bits I was ignoring anyway.
I have feed back! I don't need to mathmaticaly calculate where the damn ball bearing is! stupid idiot(me) specifying that I can derive where the ball bearing is without feedback.
this sodding thing is going to blow up in my face and go wrong.

add in a self leveling device that means the center of gravity has to be precisly calculated....
why?
anyone else get this?