workman's open coach, a Baguely-Drewry diesel locomotive, and most recently the Quarry Hunslet) it is time to think about couplings; it's no point having a waggon that a locomotive can't pull.
In OO9 gauge the consensus seems to be to use couplings designed by The Greenwich and District Narrow Gauge Railway Society and, unsurprisingly, referred to as Greenwich Couplings. Unlike all the couplings I've used in the past, in both OO and N gauge, Greenwich couplings arrive as a kit of parts and need assembling. I have to say that the instructions aren't the easiest to follow, but this video makes assembly nice and straightforward. So far I've made up just a single coupling and before I make up any more, or attach any to the things I've built so far I have a couple of questions. Hopefully someone reading this will have used these couplings before and have some suggestions.
Firstly, the fret of parts has been chemically blackened which seemed like a great idea until I started to make one up, whereupon the black coating just flaked off wherever I bent the part. Am I doing something stupid or am I going to have to prime/paint/varnish the coupling?
Secondly, I'm unsure if I always need to add the loop to the coupling. I've noticed that in quite a few pictures of OO9 layouts the locomotives often don't have the loop on either end, and the rolling stock often only has it at one end. I'm assuming using a loop at only one end means that the waggons etc. always have to be run in the same orientation to one another, which I suppose is okay, and that one loop is enough to form a reliable coupling. I'm certainly tempted to forgo the loop on the locomotives as just the hook looks much better, but I'm tempted to keep the loops on both ends of the rolling stock to give me more flexibility. Can anyone see any problems with that arrangement?