allot of the pulleys pictured in these home made savers are not designed for be used like this. They are plenty strong but the bearings are not designed to be loaded like this for any period of time. Jamie has the right idea using the ART pulley (the cocoon would prob have been eeeeeeven better) Im not knocking makin your own saver, i just see loads of these pulleys with knackered bearings when they've been used like this.