Since this layout is hoped to work as a branch terminus, some consideration needs to be given to a hands-off coupling system. I used Spratt & Winkles
on the big Paynestown, and while these are available in 2mm, I can't say I remember seeing them in use. More to the point, I find them enough of
a pain to set up in 4mm, so it wasn't a road I necessarily wanted to go down again.
I'd liked the look of DG couplings so while I wasn't sure how I'd get on with them, I thought i
