Ah okay, I had seen that but did not know how it operated.  Sounds simple enough!

Thanks

So, the couplers on these things seem well-designed to uncouple with just a shove from down under.  It seems that a lever, or solenoid, or even debris on the track, could serve to uncouple these.

But my search of the web for an appropriate uncoupler, particularly a remote one, has gone unsatisfied.  Have I missed it?  Am I just lame?

What are people using?  And, these things don't support that "delayed" uncoupling, do they?

Thanks!