Is the point of the "endless belt" that it always moves at a constant rate of speed? I wouldn't think HK would violate the physics of the planet in that way though it is a good analogy for everything else.
ICT
when the hands move around the pulley portion of the endless belt the clubheads speed will pick up considerably as it flies out around the pulley extending the lever length. in other words during release the hands move a short distance and yet the clubhead will move some 3 feet or so at the same time. we need not speed up the hands during release to get clubhead speed, constant hand speed is a tgm virtue