Using reaction manager as I outlined in my previous post will set it up so the string bone drives the two bow bone chains. You could also use wire parameters and scripting but that requires some fairly advanced rigging knowledge. It would take me quite a few posts to go over it all and I just don't have time for that.…
This rig is an overly complicated pile of crap. It's what happens when someone wants to learn a few techniques and I overly complicate a project they where already working on so they have a frame of reference. No one is going to make a rig like that, its only good as an example of how to use HI solvers and look at…
It looks like you assigned the look at constraint to the bone at the end of the HI chain, this will FUBAR the HI chain. You want to create 2 new bones and then align and link them to the end of the HI chain leaving all of the bones in the HI chain intact. The rig is starting to get complex and fairly dense in bones. If you…