I'm having kind of a tough time visualizing this whole thing when it comes to single cam bows. I would venture that it is no small coincidence that all solo cam bows have the round wheel at the top. Got to be something along the same linesof what Arthur was describing when talked about the nock and arrow rest being in the center of the bow, and the point of connection to the shooter (aka the grip) being below center. But having the top wheel round, and bottom wheel shaped to alter the force curve, has got to be doing some lop-sided things to the tiller measurements during the draw cycle.

Or maybe I just don't understand the concept of the solo cam bow [8D]