I don't know, Dave. The benefit wouldn't be inthe limb travel, per se. It would be that you'd be storing more energy in the limbs themselves, which would result in increased limb flexion - a side-effect, if you will. As you pointed out, the second draw cycle would be heavier, but it would stand to reason that could be eliminated or minimizedin the cam design. If nothing else, the first cycle could draw at #45, and the second cycle at 70#.

I get the feeling there are some dangerous minds at work here. LOL

LIke anything else, the initial design would probably be a rattle-trap, but over time, things get tweaked and modified. Henry Ford didn't build the GT40 on his first try, ya know.