Is this even possible? I have a o72 oval and I want to be able to change the direction of my train. can i do this and have one entry point? I would need to be able to go clockwise and counter clockwise on the layout and use the one entry point to the "reversing" loop to do so. I dont think its possible i was thinking of using a wye but i couldnt figure out the geometry. I would be using fastrack
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How big is the oval?
You will need an entry and exit point for each direction to avoid having to back a train. Four switches are the minimum.
A single reverse loop has one entry point and requires two switches and a train going the wrong way around your O72 will have to back through the reversing loop. The reverse loop will limit the length of the trains.
A wye will have two entry points (one for each direction and require three switches and all trains will be required to back out. The length of the wye stem limits the length of the train.
I'll try to post some examples.
Jan
You will need an entry and exit point for each direction to avoid having to back a train. Four switches are the minimum.
A single reverse loop has one entry point and requires two switches and a train going the wrong way around your O72 will have to back through the reversing loop. The reverse loop will limit the length of the trains.
A wye will have two entry points (one for each direction and require three switches and all trains will be required to back out. The length of the wye stem limits the length of the train.
I'll try to post some examples.
Jan
How big is the oval?
Third layout down on this Thortrains page is about the simplest double return/criss-cross that also gives a decent train length:
Jan has it. You need two loops or a wye. The only design that I can think of is a figure 8 or a depressed figure 8. Still four switches and two loops.
There's always going to be a limit to the train length. Even real railroads have limits. They have more room in which to work.
Jan
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