This weekend's labours have been focussed on installing a curved backboard on the left module.
The above photos shows the first test fit. Not satisfied with the radius of the curve, I decided to chop a little more out of each of the notches to squeeze a better curve in. The timber I'm using is 4mm ply used in concrete formwork. It is easy to bend but likes embedding itself in my hands, one splinter at a time. Work gloves. Lesson learned.
I hadn't planned a specific radius for the backboard, so I hadn't factored in how much cement siding it would take up. I thought I was prepared to sacrifice about 5cm from the end. Until I saw it.
I had planned to just keep cutting away the notch sizes until I got the radius I wanted. This worked, but there comes a point when the curve will be obvious even under the photographic backdrop, rather than a nice, subtle background to the model. Above is a picture of where I decided to stop. I then grabbed the layout design and overlaid the module to it.
A 3-wagon siding would allow me to put the cement discharge structure in the middle and 'gravitate' 2 wagons through it prototypically. The above shows how what I had hoped would be a 3-wagon siding, is not going to happen in the current configuration. If I was only running PRX or FRH hoppers, I might be able to get away with it using some selective compression, but the PCX hoppers I want to run are going to prevent that.
As a work-around, I grabbed a spare piece of track and slewed the siding to be parallel with the main line. It's a little better, and a I reckon I could now get away with a PRX-PCX combination in the siding. A 2xPCX combination looks unworkable. I'd be keen to hear thoughts from anyone else who can see a better solution - I could just be too close to it for now to see it better. I've put the tools down til next weekend, so who knows, maybe I'll get an epiphany during the week.
I've referred to the prototype buildings for the cement siding in previous posts as the one from Tamworth. I've never been to Tamworth, so I was referring to pictures I'd seen of one from google searches. Turns out the cement works I was referring to is actually the siding at Nemingah, about 7k's further up the line from Tamworth. Here's some photos:
Cement unloading facility at Nemingah in 2006. Taken from Rolfeworld. (www.nswrail.net.au)
From the other side, taken from this thread on Railpage. A PRX hopper is just visible inside.
You can also see a video of a similar one Marcus Amman built for his Main North layout, representing the one formerly standing at Ourimbah, here. I'm thinking this would be an excellent project to model and write up for the AMRM. That's a good couple of months away for now though.