Here's the cam, with an allen wrench to show how you adjust the draw weight. Now that I've had time to mess with it, I've seen the draw length stays the same, 29". Not that I need to change it, but I wonder if turning the angled piece of metal to point away from the bow or moving it from the belly to the back would change the length? It seems likethat might adjust the cam position the same as switching the cable between the grooves in some modern bows, but I'm not sure.