help needed with simple armature!

Support Animation and Rigging
1

i have been wrestling with this for ages.
see the file.
all i need is for the selected armature bone hang2 to be able to go up and down pushing the other bone to rotate. in pose mode.
the other armature on the bottom right works the way i need!
why is this one being awkward!
i have deleted it a few times - even tried to copy an other one- no deal.
2.49b
thanks all

Attachments

temp3.blend (941 KB)

2

The bone (on the right) that works uses a target-less constraint on the up-down bone which is what makes it work. The constraint on the rotating bone does nothing.

So set up the hang bone the same way.

Attachments

temp4.blend (324 KB)

3

Thanks that works.
on the right, the lower bone is constrained to the ik bone, below left of it.
do i need that? yours does not have that on the top bone.
thanks