With the motors like those sold by Powerkingshop (I guess I am referring to the Chinese mass imports), I see that they are usually mounted in a more-or-less vertical position, but often tilted slightly forward. My question is, how much leaway is there in orientation? For instance, could it be tilted 90 degrees forward from vertical? Would it run upside down? Yes I know its a dumb question but I promise to only ask it once.