Okay I need some hand holding to solve this one.

I cannot for the life of me figure how to set of an SDK soloution for this problem.

If I try using aim constraints the cylinders and piston fly apart as soon as I try to parent them to a bone or joint.

If I try to use an SDK then there is a problem when I try to move the pistons relative to the cyclinder while they are bound to bones.

I don't know how to rig this.