I've been doing a wee bit more work on my non working NZR couplers and have come up with a mk 2 prototype for 4 wheeled wagons.
This is designed to fit into the Trackgang coupler pocket. again, no high tech moving parts, but I have included the brake hose on the side. Not sure if I can add sidechains as well. The head of the coupler is still on the big side, but it still looks OK from 2'
I have to do a bit of thinking about adapting this for bogie wagons, maybe by using the base of the Trackgang knuckle coupler and attaching the head to the end in place of the knuckle.
Also, does anyone have a good local source of the Microtrains coupler range or do I have to go overseas?