Well, maybe I'll use this as a blog...
I had my landscaping updated at my house. The original landscaping
was designed to accomodate a garden railroad, but there were still a
few tweaks needed. I'll list up some of these things here in hopes
it may help others avoid mistakes.
One part of the backyard is a patio that has an oval grassy area
next to it. The idea was to put the train track on the edge of the
patio around the grass. There was a nicely poured contour S curve of
5 foot radius. WRONG! I had the 2 curves back to back. So I had the
concrete extended to be 2 curves with a straight section between
them. S curves with no straight in between will literally throw the
trains off the track. I'm intending to use the long USA trains
streamliner cars, so this was a necessary event. I don't have a lot
of room in the backyard, so this was as tight as I dared.