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@sizemore - you mentioned using a DPDT switch on the programming track? How did you envision that working?
Why don't you make the crossing (AR) a double track split? Including a crossing? You lose the switch spliting the two spurs and have the RH track come across the other and into the RH spur.You can stage an eastbound train on one dead-end sidings and have a westbound train come in on the other. Then hand-move the westbound into an eastbound on the EB track. The Atlas track sections should have the correct geometry to make a split double-main w/o kinks. Also shouldn't be any polarity problems. A double-track junction looks pretty cool.
The simple answer is "because it's already done." I don't really want to rip up anything. I don't know the curve radius. I'll have to measure it unless @sizemore remembers.
Here we go! Here's my first draft. I'm calling the new layout "The West Slope". I will be modeling Portage, PA and the AR vignette of Gallitzin, PA. There will be a view block in the middle. We aren't sure why NY Interlocking is called that. There's theories but nothing conclusive. You can see the mainline on the top and the spur that runs off it in to town. Leman Machine has been in Portage since the late 20's. This will be great for me to show off all my great signature PRR flat cars. And we now travel eastward towards town...The spot where the Portage Area Historical Soceity is the former PRR passenger station. It's a two story brick building. The Freight Depot, also still standing is trackside near N Railroad Ave and Main St. Here's a shot of the freight depot:You can see the feed mill and the depot in this shot (looking west):Here's the passenger station. Like Johnstown, you enter the station streetside and go upstairs to the tracks. New Portage Tunnel inspiration:The Cassandra-ish curve. I don't want to cram too much in so we will see how it turns out. NY Tower. I don't know if it was still around in this form in the 50's, but I don't care. I like it.I plan on using a modified J/LEMO tower kit:I may use this for the freight depot.As for the Passenger station and nearby tunnel...not sure what to do yet. Here's the scene:The things is...this tunnel is only a block over. I may use this instead.As for the AR section...a lot of nothing. Negative space. This will satisfy my PRR main itch as AR was 2 track main. Not sure what to do about that spur off the main though. Ed suggested parking coal hoppers there. Portage had many mines so it does make sense. I don't want to put a whole mine in that spot. I'm also thinking about how the view block will work on that end. Maybe have those tracks go through the view block on to the Portage side?Thoughts?