Great idea with the cardboard! Are you sure you're going to have enough room for turns in those 90 degree corners? Looks a little tight. But then again, you are actually standing in the room and I am just looking at a picture.
To get more accurate curve radii, make yourself a trammel
There's the way shown, or you can have the point fixed and drill several holes for the pencil at selected radii. Just remember that when using flex track, you don't have to be too slavish in following a fixed radius in order to get things to fit. In fact it's preferable to have an easing of the radius where it enters or exits the curve (called an easement oddly enough).
That is the tool I need. Looks easy to build.
Thanks
I don't know, looks like the first one is in wrong to me.
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In a normal yard ladder the first one is always opposite to get the track diverging away from the primary. Then each one that follows is opposite to put the next tracks parallel to it.I am trying to understand the reason behind which is the correct way. Why would the first yard turnout be different than the other two? Seems like if that one should be flipped so should the other two. The 4th one is for traffic headed in the other direction.