OK, I have limited knowledge of all things track but am building my own from C&L parts for my 7mm layout.
I've used Templot to draw up a track plan and I've used the following:
B6 turnouts as a crossing
31.5mm MF track gauge
Track centres at 95mm (wider than normal to allow room for kit...
When I was small my mum and dad took me to Dyffryn Ardudwy for our summer holidays, a village not far from Barmouth which we went to nearly every year when I was young. BR blue DMU's and double headed 37's on summer specials are what I remember, I had loads of photos but thinking I'll never use...