Does anyone know how to get a hinge constraint to reverse direction?  The objective is to have a door open, remain open for a few seconds and then close,  the open part is easily configured with a hinge constraint and some initial velocity.   It is the closing part that is a nightmare.

I've tried flipping the hinge 180 degrees; no effect other than to reverse to direction of the opening.  Tried using negative velocity, same result.  Tried copying the physics on the timeline and reversing the copied segment,  No effect.
Very frustrating!