By way of a brief update, here's a shot of the locomotive terminal under construction. Getting the turntable and roundhouse aligned was a major headache, but after much fiddling around I eventually managed it. There is a handy template supplied with the Walthers turntable, but even so I still found it quite tricky to get everything right. I have wired in some of the tracks but there are still more to go - it's one of those boring jobs I can only face in small doses, since each track needs a lot of filing to match the profile of the turntable road. You can also see the Walthers coaling stage, which is a very pleasing but complicated kit - and I'm still not done with it! I have some sanding and ash facilities to add, and then I'd like to add some diesel fuelling points, possibly on a siding on the other side of the main.
I'd had the Walthers turntable for two years before powering it up - fortunately (after a bit of a learning curve) I got it all working nicely, and it is a very impressive piece of kit. Eventually it will feed the 9 roundhouse roads plus a couple more open-air tracks.
Meanwhile - but not too far away in layout terms - more progress on the branchline. It's probably not too clear from the track plans I've posted, but the idea here is that the branch climbs away from the main at 3% (as the main descends at 2%) and then diverges, with one direction crossing the main and heading out onto the peninsula. The other track continues on to serve some high-level industries located near the servicing terminal. The diverging route, at 11" radius, is the tightest visible curve on the layout but given that this is essentially an industrial spur, I think it will look acceptable and offer a nice contrast to the more generous curves on the main. I thought of having the branch cross the main via a bridge, but in the end opted for the main diving into a short tunnel. There's an odd visual illusion going on here whereby the branch looks less steep than the main.
That's it for now, cheers for reading.